Anchor Sentry 2.11.1 - App Store

Anchor Sentry version 2.11.1

Updated At: 2026-06-28

Changes: Version History - Restored the warning dialog when location permission is insufficient, for example when it is not set to "Always". - Added an optional position accuracy filter that ignores positions above a configurable accuracy limit and can warn about poor GPS reception. - Stopping a triggered anchor alarm is now more reliable. When an alarm is acknowledged from the notification, it will not immediately start again while the boat is still outside the alarm circle. A new alarm can only be triggered after the position was back in the safe area first. 2.11.1 3d ago - Added a new optional setting Show picker in dialog to choose between the previous in-cell pickers scrolling to change values in the settings and a larger picker dialog. - Added dedicated position filter settings (master filter, speed filter, distance filter, distance threshold and time delay) in a separate filter settings page. - Updated position processing to use the new filter options for speed and distance jump handling. - Added Posidonia support in exclusion zones: Posidonia polygons can now be downloaded from Spanish authority data for the currently visible sea area and stored as zones. - Posidonia zones are shown on the map for orientation but do not trigger alarms. - Mirroring: Fixed a connection recovery issue when switching from onboard Wi-Fi to cellular data (e.g. LTE). The receiver now reconnects the WebSocket link more reliably. - Proximity alert/mirroring: When transmission is stopped while the server connection remains active for the proximity alert, the connection is now kept in proxy mode correctly and no longer restarts normal transmitting after a later reconnect. 2.11 Jun 3 - Fixed a cause for possible false alerts while the ship is being nearly stationary. 2.10.2 May 20 - Fixed an GPS update problem when the ship was nearly stationary. If you still encounter problems after the fix try setting Sensitivity to 0.0. - Fixed a problem with location data via NMEA where a premature decimal rounding caused precision loss. - Adjusted the App startup to be compatible with future iOS Version. 2.10.1 May 11 - The position update monitoring from the last update has been removed again, as restarting the location service when position data was missing caused undesirable side effects. - The stability of network communication with the server has been improved, so that mirroring and the proximity alarm should now work more reliably even with Starlink. Please let me know if there are further issues. - The watchdog logic implemented in the last version does not require an internet connection anymore and runs locally. It is active only while the app is in the background. - When the app starts, it is now checked wether the location permission for the app is set to "Always", as otherwise stable background operation is not possible. - Improved the memory management so that the app is less likely to be terminated by the iOS when it requires a lot of memory. - If you have "Disable screen lock" enabled in the settings, there will be now a new button on the main screen that let you adjust the brightness of the mainscreen. Leaving the main screen or triggering an alert will reset the brightness to the default value. - There is now a FAQ (frequently asked questions) for the App. It is accesible from the manual via the link there. 2.10 Apr 9 - Added an error message when you try to send a mail from within the app and the Apple Mail app is not configured. - Added an mail button to the system log viewer to mail the log to the support if Apple Mail app is configured. - Changed the function of the share button in the system log viewer to call the actual share system and not sending a mail directly. So you can share the log with the support in the way you prefer most. - If you have enabled the setting to clear old and remote tracks, it will now only clear tracks older than 24 hours, independent of distance. - There are now some safety features that can warn you about unexpected app crashes, app terminated by iOS or missing location updates. Please see Settings-> Administration-> Safety and the help there. Please make sure you have read and understood the implications of using these functions. 2.9 Mar 12 - Fixed a potential crash when switching unit to feet and adjusting distance rings in the settings. 2.8.8 Feb 24 - You can no longer create an empty exclusion zone. An exclusion zone must consist of several points. Just activating the add zone command and tapping on the screen once will do nothing and reset the command. You have to actually move your finger some way to get a valid exclusion zone. - Increased the sensitivity for selecting a favorite anchoring place on the map through touch slightly. 2.8.7 Jan 13 - Toggling the compass rose will now take immediately effect and not longer only after the next screen update. - A missing custom sound file no longer causes a crash while showing the error message about the missing sound file. - Most function buttons on the receiving device of a mirroring are now blocked. They are available again after ending the mirroring. 2.8.6 08/27/2025 - Mirroring: Receiving can no longer be activated when the receiving device is anchoring. This caused quite some problems with the server connection as sender and receiver were suddenly the same. Also, switching off receiver mode will now raise anchor on the receiving device else you would not be able to activate receiving again. 2.8.5 04/28/2025 - You can now configure an additional circle in the settings to watch the distance to shore for regions where anchoring too close to a shore is restricted. You can set the color for this new ring in the new Color Settings page, where you also can change some other colors. - The recorded track can now be shown in 4 different colors, depending how old the trackpoints are. So e.g. the most recent 30 minutes of the track will be in yellow, while older trackpoints will be shown in a different color. The colors (iOS 14+ required) and the time thresholds can be edited (iOS 14+ required) in the new Color Settings page, where you can also disable this feature. 2.8.4 02/28/2025 - Fixed a problem with TCP connection to NMEA server. 2.8.3 05/28/2024 - Fixed a communication problem on iOS version older than 17.0 leading to a crash. - Added a crash reporting tool. You can disable sending crash reports in the settings, but I urge you not to do so. After all I cannot fix bugs if I don't know of them. 2.8.2 05/14/2024 The barometer will now work again in iOS 17.4 and later. Because of privacy changes in iOS 17.4 barometric data are bow tied to Motion and Fitness. In order to make it work you have to enable Fitnesstracking in your devices privacy settings under "Motion and Fitness". After restarting Anchor Sentry you have to go there again and enable Anchor Sentry, which will now have its own entry there, to access the data. 2.8.1 05/08/2024 - Compass reading of the device is not correctly shown in top right corner of the map. - Boat vector while moving is now also displayed on the Navionics map. - Improved the user feedback when downloading Navionics maps for offline use. - Navionics maps now recognize the selected unit (feet or meter) for displaying depths. - Navionics user can now set some chart options like in the Boating App. For this the "Navionics login" entry in the settings has been replaced with a "Navionics settings" entry. The former "Navionics login" you will find within the new settings page. - Auto anchoring now uses the NMEA heading if available. - Added the device distance from bow to the ship data settings. This is the same value as in the auto anchoring settings. If enabled in the ship data settings this distance will used to adjust the anchoring position when droping the anchor as well as the alert radius. 2.8 09/13/2023 - Fixed a false error message when registering an userid 2.7.1 08/14/2023 - The option to keep track upon app start has been removed. Current track data will now always be kept. Instead there is now the option (enabled by default) to delete track points that are more than 1 nm away from the current location upon app start. Please keep in mind that having to many track data saved may adversely effect the apps performance. - There is now a new button in the toolbar to show your boats swinging circle on the map in addition to the alert circle, based on actual chain length and depth. See the help for more details. - You can now attach pictures to stored anchoring places. - Systemlog entries are now deleted after 5 days. 2.7 07/27/2023 - Bearing and distance as well as the most recent GPS update time are now correctly displayed when the app is brought to the foreground. - The graphics on the map shouldn't spontaneously vanish any longer. - New experimental feature: Automatic anchoring. The App will drop the anchor automatically as soon as certain conditions are met. Please check the corresponding help page in the settings. This is an experimental feature still in development. Please let me now your experience with it. 2.6 07/03/2023 - There is now a confirmation dialog for raising the anchor and disarming the alert. You can switch off these dialogs in the settings. - For better readability activated buttons now have a green background. This applies only to the 3D button style. - Mirroring: Fixed a problem that the receiver could not reestablish the connection once terminated. 2.5.1 05/29/2023 - Perimeter alert, proximity alert and battery alert can now configured to use different sounds. - Added the possibility to use custom alarm sounds. - Distances can now also been shown in feet instead of meter. See Settings. - Added a contact form in the Settings. - There is a new style for the main buttons that you may find more intuitive than the old style. If you prefer the old style you can switch to it in the Settings. - Anchoring using the position dialog now works correctly at southern latitudes and western longitudes. - Anchor Sentry uses now Critical Alerts. Critical Alerts will play even when the device is muted or set to not disturb. The next time you toggle alert on, you will be asked to allow Critical Alerts. You can disable this feature in the settings. 2.5 11/23/2022 - Fixed a color problem with the titlebar in iOS 15+. - Using the bearing/distance part of the anchoring dialog, once you start entering values manually in the bearing field, the compass updates will be suspended. - Other ships at anchor (on the server) no longer trigger a proximity alert if the last position update from the ship is older than 2 hours. It is then assumed that that ship left without properly raising anchor within the app. 2.4.6 06/13/2022 - Fixed a problem in iOS 15 with not coloring the titlebar when anchoring and arming the alert. 2.4.5 05/10/2022 - After the first installation of the app on a device all subsequent installations on other devices which are signed in to the same iCloud account will share the user id of the first device unless the user changed it. So the mirrorfunction is now ready to run out of the box. - Added a new option in the settings to use the last distance and perimeter radius when dropping anchor via the anchoring dialog. 2.4.4 05/07/2022 - A device can no longer be set to transmit while not anchored. - Sending a device to receive while the device you anchored with is not already transmitting will automatically the anchoring device to transmit, provided it has the proximity alert active. - Terminating the app for any reasons will now remove the device as active device from the server after 5 minutes. - The receiver will now also show the transmission time of the data if it differs from the receiving time. - General improvements on communication stability and recovery. - Automatic screen locking can now be disabled in the settings. 2.4.3 09/08/2021 - Fixed a problem with the bearing and distance window not updating after anchoring. - Fixed a problem with user ids with special characters crashing the app. - When setting a device as mirror receiver, the screen will be automatically locked. 2.4.2 09/06/2021

Anchor Sentry version 2.10.2

Updated At: 2026-05-27

Changes: Version History - Fixed a cause for possible false alerts while the ship is being nearly stationary. 2.10.2 6d ago - Fixed an GPS update problem when the ship was nearly stationary. If you still encounter problems after the fix try setting Sensitivity to 0.0. - Fixed a problem with location data via NMEA where a premature decimal rounding caused precision loss. - Adjusted the App startup to be compatible with future iOS Version. 2.10.1 May 11 - The position update monitoring from the last update has been removed again, as restarting the location service when position data was missing caused undesirable side effects. - The stability of network communication with the server has been improved, so that mirroring and the proximity alarm should now work more reliably even with Starlink. Please let me know if there are further issues. - The watchdog logic implemented in the last version does not require an internet connection anymore and runs locally. It is active only while the app is in the background. - When the app starts, it is now checked wether the location permission for the app is set to "Always", as otherwise stable background operation is not possible. - Improved the memory management so that the app is less likely to be terminated by the iOS when it requires a lot of memory. - If you have "Disable screen lock" enabled in the settings, there will be now a new button on the main screen that let you adjust the brightness of the mainscreen. Leaving the main screen or triggering an alert will reset the brightness to the default value. - There is now a FAQ (frequently asked questions) for the App. It is accesible from the manual via the link there. 2.10 Apr 9 - Added an error message when you try to send a mail from within the app and the Apple Mail app is not configured. - Added an mail button to the system log viewer to mail the log to the support if Apple Mail app is configured. - Changed the function of the share button in the system log viewer to call the actual share system and not sending a mail directly. So you can share the log with the support in the way you prefer most. - If you have enabled the setting to clear old and remote tracks, it will now only clear tracks older than 24 hours, independent of distance. - There are now some safety features that can warn you about unexpected app crashes, app terminated by iOS or missing location updates. Please see Settings-> Administration-> Safety and the help there. Please make sure you have read and understood the implications of using these functions. 2.9 Mar 12 - Fixed a potential crash when switching unit to feet and adjusting distance rings in the settings. 2.8.8 Feb 24 - You can no longer create an empty exclusion zone. An exclusion zone must consist of several points. Just activating the add zone command and tapping on the screen once will do nothing and reset the command. You have to actually move your finger some way to get a valid exclusion zone. - Increased the sensitivity for selecting a favorite anchoring place on the map through touch slightly. 2.8.7 Jan 13 - Toggling the compass rose will now take immediately effect and not longer only after the next screen update. - A missing custom sound file no longer causes a crash while showing the error message about the missing sound file. - Most function buttons on the receiving device of a mirroring are now blocked. They are available again after ending the mirroring. 2.8.6 08/27/2025 - Mirroring: Receiving can no longer be activated when the receiving device is anchoring. This caused quite some problems with the server connection as sender and receiver were suddenly the same. Also, switching off receiver mode will now raise anchor on the receiving device else you would not be able to activate receiving again. 2.8.5 04/28/2025 - You can now configure an additional circle in the settings to watch the distance to shore for regions where anchoring too close to a shore is restricted. You can set the color for this new ring in the new Color Settings page, where you also can change some other colors. - The recorded track can now be shown in 4 different colors, depending how old the trackpoints are. So e.g. the most recent 30 minutes of the track will be in yellow, while older trackpoints will be shown in a different color. The colors (iOS 14+ required) and the time thresholds can be edited (iOS 14+ required) in the new Color Settings page, where you can also disable this feature. 2.8.4 02/28/2025 - Fixed a problem with TCP connection to NMEA server. 2.8.3 05/28/2024 - Fixed a communication problem on iOS version older than 17.0 leading to a crash. - Added a crash reporting tool. You can disable sending crash reports in the settings, but I urge you not to do so. After all I cannot fix bugs if I don't know of them. 2.8.2 05/14/2024 The barometer will now work again in iOS 17.4 and later. Because of privacy changes in iOS 17.4 barometric data are bow tied to Motion and Fitness. In order to make it work you have to enable Fitnesstracking in your devices privacy settings under "Motion and Fitness". After restarting Anchor Sentry you have to go there again and enable Anchor Sentry, which will now have its own entry there, to access the data. 2.8.1 05/08/2024 - Compass reading of the device is not correctly shown in top right corner of the map. - Boat vector while moving is now also displayed on the Navionics map. - Improved the user feedback when downloading Navionics maps for offline use. - Navionics maps now recognize the selected unit (feet or meter) for displaying depths. - Navionics user can now set some chart options like in the Boating App. For this the "Navionics login" entry in the settings has been replaced with a "Navionics settings" entry. The former "Navionics login" you will find within the new settings page. - Auto anchoring now uses the NMEA heading if available. - Added the device distance from bow to the ship data settings. This is the same value as in the auto anchoring settings. If enabled in the ship data settings this distance will used to adjust the anchoring position when droping the anchor as well as the alert radius. 2.8 09/13/2023 - Fixed a false error message when registering an userid 2.7.1 08/14/2023 - The option to keep track upon app start has been removed. Current track data will now always be kept. Instead there is now the option (enabled by default) to delete track points that are more than 1 nm away from the current location upon app start. Please keep in mind that having to many track data saved may adversely effect the apps performance. - There is now a new button in the toolbar to show your boats swinging circle on the map in addition to the alert circle, based on actual chain length and depth. See the help for more details. - You can now attach pictures to stored anchoring places. - Systemlog entries are now deleted after 5 days. 2.7 07/27/2023 - Bearing and distance as well as the most recent GPS update time are now correctly displayed when the app is brought to the foreground. - The graphics on the map shouldn't spontaneously vanish any longer. - New experimental feature: Automatic anchoring. The App will drop the anchor automatically as soon as certain conditions are met. Please check the corresponding help page in the settings. This is an experimental feature still in development. Please let me now your experience with it. 2.6 07/03/2023 - There is now a confirmation dialog for raising the anchor and disarming the alert. You can switch off these dialogs in the settings. - For better readability activated buttons now have a green background. This applies only to the 3D button style. - Mirroring: Fixed a problem that the receiver could not reestablish the connection once terminated. 2.5.1 05/29/2023 - Perimeter alert, proximity alert and battery alert can now configured to use different sounds. - Added the possibility to use custom alarm sounds. - Distances can now also been shown in feet instead of meter. See Settings. - Added a contact form in the Settings. - There is a new style for the main buttons that you may find more intuitive than the old style. If you prefer the old style you can switch to it in the Settings. - Anchoring using the position dialog now works correctly at southern latitudes and western longitudes. - Anchor Sentry uses now Critical Alerts. Critical Alerts will play even when the device is muted or set to not disturb. The next time you toggle alert on, you will be asked to allow Critical Alerts. You can disable this feature in the settings. 2.5 11/23/2022 - Fixed a color problem with the titlebar in iOS 15+. - Using the bearing/distance part of the anchoring dialog, once you start entering values manually in the bearing field, the compass updates will be suspended. - Other ships at anchor (on the server) no longer trigger a proximity alert if the last position update from the ship is older than 2 hours. It is then assumed that that ship left without properly raising anchor within the app. 2.4.6 06/13/2022 - Fixed a problem in iOS 15 with not coloring the titlebar when anchoring and arming the alert. 2.4.5 05/10/2022 - After the first installation of the app on a device all subsequent installations on other devices which are signed in to the same iCloud account will share the user id of the first device unless the user changed it. So the mirrorfunction is now ready to run out of the box. - Added a new option in the settings to use the last distance and perimeter radius when dropping anchor via the anchoring dialog. 2.4.4 05/07/2022 - A device can no longer be set to transmit while not anchored. - Sending a device to receive while the device you anchored with is not already transmitting will automatically the anchoring device to transmit, provided it has the proximity alert active. - Terminating the app for any reasons will now remove the device as active device from the server after 5 minutes. - The receiver will now also show the transmission time of the data if it differs from the receiving time. - General improvements on communication stability and recovery. - Automatic screen locking can now be disabled in the settings. 2.4.3 09/08/2021 - Fixed a problem with the bearing and distance window not updating after anchoring. - Fixed a problem with user ids with special characters crashing the app. - When setting a device as mirror receiver, the screen will be automatically locked. 2.4.2 09/06/2021 - Fixed a problem with not updating the status bar and buttons when anchoring by touching a favorite anchoring place. - Fixed a vanishing anchoring symbol in Google Maps. - Added an ahead vector for the boat heading to make it easier to hit a favorite. Length of the vector is 250 m fixed and it is visible only in combination with the directional ship icon and while NOT at anchor. 2.4.1 08/24/2021 - Reworked the mirroring system. Receiver will now receive data immediately as soon as transmitter sends it without the need to polling it. Also the track plot on the receiver is more detailed. You might have to reregister your id if you registered it recently. - Added a new experimental feature: Proximity alert. If two boats which are using Anchor Sentry are anchoring close to eachother they are alerted if they come too close to each other because of dragging anchors. See the communication settings for an explanation how it works. - Reworked the help system. It is now local and does no longer requires an internet connection. - Added a low battery alert. - Added a alert test to check the sound volume. - Position data can now be acquired from a NMEA datasource instead of the built in GPS. - Some minor UI fixes and improvement. 2.4 08/21/2021

Anchor Sentry version 2.9

Updated At: 2026-03-12

Changes: - Added an error message when you try to send a mail from within the app and the Apple Mail app is not configured. - Added an mail button to the system log viewer to mail the log to the support if Apple Mail app is configured. - Changed the function of the share button in the system log viewer to call the actual share system and not sending a mail directly. So you can share the log with the support in the way you prefer most. - If you have enabled the setting to clear old and remote tracks, it will now only clear tracks older than 24 hours, independent of distance. - There are now some safety features that can warn you about unexpected app crashes, app terminated by iOS or missing location updates. Please see Settings-> Administration-> Safety and the help there. Please make sure you have read and understood the implications of using these functions.

Anchor Sentry version 2.8.7

Updated At: 2026-01-13

Changes: - You can no longer create an empty exclusion zone. An exclusion zone must consist of several points. Just activating the add zone command and tapping on the screen once will do nothing and reset the command. You have to actually move your finger some way to get a valid exclusion zone. - Increased the sensitivity for selecting a favorite anchoring place on the map through touch slightly.

Anchor Sentry version 2.8.6

Updated At: 2025-08-27

Changes: Aug 27, 2025 Version 2.8.6 - Toggling the compass rose will now take immediately effect and not longer only after the next screen update. - A missing custom sound file no longer causes a crash while showing the error message about the missing sound file. - Most function buttons on the receiving device of a mirroring are now blocked. They are available again after ending the mirroring.

Anchor Sentry version 2.8.5

Updated At: 2025-04-28

Changes: Apr 28, 2025 Version 2.8.5 - Mirroring: Receiving can no longer be activated when the receiving device is anchoring. This caused quite some problems with the server connection as sender and receiver were suddenly the same. Also, switching off receiver mode will now raise anchor on the receiving device else you would not be able to activate receiving again.

Anchor Sentry version 2.8.4

Updated At: 2025-02-28

Changes: Feb 28, 2025 Version 2.8.4 - You can now configure an additional circle in the settings to watch the distance to shore for regions where anchoring too close to a shore is restricted. You can set the color for this new ring in the new Color Settings page, where you also can change some other colors. - The recorded track can now be shown in 4 different colors, depending how old the trackpoints are. So e.g. the most recent 30 minutes of the track will be in yellow, while older trackpoints will be shown in a different color. The colors (iOS 14+ required) and the time thresholds can be edited (iOS 14+ required) in the new Color Settings page, where you can also disable this feature.

Anchor Sentry version 2.8.3

Updated At: 2024-05-28

Changes: May 28, 2024 Version 2.8.3 - Fixed a problem with TCP connection to NMEA server.

Anchor Sentry version 2.8.2

Updated At: 2024-05-14

Changes: May 14, 2024 Version 2.8.2 - Fixed a communication problem on iOS version older than 17.0 leading to a crash. - Added a crash reporting tool. You can disable sending crash reports in the settings, but I urge you not to do so. After all I cannot fix bugs if I don't know of them.

Anchor Sentry version 2.8.1

Updated At: 2024-05-08

Changes: May 8, 2024 Version 2.8.1 The barometer will now work again in iOS 17.4 and later. Because of privacy changes in iOS 17.4 barometric data are bow tied to Motion and Fitness. In order to make it work you have to enable Fitnesstracking in your devices privacy settings under "Motion and Fitness". After restarting Anchor Sentry you have to go there again and enable Anchor Sentry, which will now have its own entry there, to access the data.