About Featherweight UI
The Featherweight Interface app connects any of your Bluetooth-enabled Featherweight Altimeters products to your phone. For the Blue Raven flight computer, use your phone to see live sensor data, set up deployment...
The Featherweight Interface app connects any of your Bluetooth-enabled Featherweight Altimeters products to your phone. For the Blue Raven flight computer, use your phone to see live sensor data, set up deployment conditions, download and review recorded flight data, and more! For the Featherweight GPS tracker, your phone points to your rocket and provides all the rocket position, velocity, link quality and tracker health data you would want at your fingertips. Live map feature plots the ground station and tracker locations to plan your recovery.
Version History New features: Full inter-operability between original ground stations and trackers and Swift ground stations and trackers when using the original channels Fast scanning of all 3 channel plans when using Swift GS Swift tracker scans for an open channel before transmitting Bugs fixed: Swift LoRa comm is more reliable now with improved time synchronization Voice telemetry on original trackers and GS is available again Downloading recorded data is more reliable 1.1.3 5d ago Corrected a previous issue where the LoRa status was showing disconnected when it was actually connected. Fixes a bug that can cause a device to erroneously show up as a Blue Raven with serial number 0 when it is re-connected to the phone. Known issues: 1. Voice telemetry is absent 2. In rare cases, if the Swift ground station is Bluetooth-disconnected from the phone and re-connected, it could receive an updated clock time from the phone that is inaccurate enough to cause it to lose sync with the tracker and become LoRa-disconnected. This vulnerability was also present in previous versions. Workaround: Keep the ground station within reach of the phone, especially after the Tracker gets a GPS lock. 1.1.2 May 6 New features: -Fixed bugs which could cause loss of synchronization and LoRa communication -Fixed issue with command authorization during connection -New replay feature shows the rocket tilt during the flight for Blue Raven and Blue Jay flight recordings -Fixed tracker page display of LoRa connection status Known issues: -When changing the LoRa channel of an original tracker, the resulting channel does not match the selected channel -Channel scanning in the Channel list is not working for Swift, and stops prematurely when using the original Tracker. -Over-the-horizon relay is not yet supported for the Swift -Simulated flights are not yet supported for the Swift -On-board data recording is not yet supported for the Swift. 1.1.1 Apr 29 Build 466 now supports the new Featherweight Swift with basic tracking functionality. The Swift includes support for the new 240-channel frequency hopping channel plan to reduce LoRa network congestion at large launches The tracking map view now has live telemetry. New firmware included for the Blue Jay and Blue Raven, with controlled BLE transmit power to reduce Bluetooth network congestion at large launches 1.1.0 Apr 12 Corrected the text in the dialog box for the over-the-air updates to show correct was/now on build version 1.0.25 Jan 13 -Provided better on-screen instructions in the event that an over-the-air update gets interrupted 1.0.24 Jan 6 - Support for new sensors in Blue Jay 2 and Blue Raven 2 - Blue Jay and Blue Raven: Default apogee settings now include abort for unstable flights if the rocket tilt exceeds 90 degrees within the first 2 seconds after liftoff - Fixed downloading of tracker and altimeter data from the same flight - Fixed text to speech feature not working on iOS 26 Known issues: The Blue Jay and Blue Raven require a power cycle once after firmware update is complete. 1.0.23 Jan 2 - Fixed an issue where some of the deployment settings thresholds could be displayed and validated incorrectly. 1.0.22 08/29/2025 -Includes new firmware for the Blue Jay to correct a bug that would erase both sets of recorded flight data in some circumstances -Improved channel list feature -Improved sequential downloading when multiple devices have data from the same launch -Accel calibration now tolerant to temporary disconnections -My devices list now shows current name and serial number rather than previous version 1.021 08/25/2025 What's new: -Support for new Blue Jay2 hardware -Axial & lateral acceleration data now included in Blue Jay flight logs -Enhanced GPS tracker channel scanning Bug fixes: -Fixed LoRa packet success rate display -Resolved tracker & ground station pairing issues -Fixed intermittent arming/command issues on Blue Raven & Blue Jay Known issues: - If Blue Jay over-the-air update fails, restart the app and ensure it's the only device powered on. Devices may appear off if the update is interrupted. -Monitoring another user's flights via the channel list can temporarily cause problems re-connecting your ground station to your own tracker. 1.0.20 08/13/2025 Click the middle of the screen to get a voice summary of go for launch Deployment settings used in a flight are now automatically included with the flight export Bug fixes: Channel scan now scans all channels Improved Bluetooth connection reliability for trackers and ground stations Improved Bluetooth connection status indications for all devices Fixed an issue preventing OTA updates for the Blue Raven or Blue Jay while connected to a tracker 1.0.18 03/26/2025 Reliability improvements to several features: -Data downloads -Command authorization for Blue Raven and Blue Jay -Bluetooth connections to trackers and ground stations -Voice telemetry Known limitations: -Over-the-air updates to the Blue Jay or Blue Raven should be performed with all other Featherweight devices turned off. 1.0.17 01/27/2025 Fixed Blue Jay bug that had been corrupting downloaded data in the case where the Blue Jay records until the flash gets full. Includes new Blue Jay firmware. Fixed bug that sometimes prevented command authorization from completing at power-up. 1.0.16 01/15/2025 Over-the-Air (OTA) updates which could get stuck in certain situations in the last build are now recoverable with this build. 1.0.15 11/27/2024 Improved response to an interrupted Over-the-Air firmware update. Blue Jay avoids attempting to download non-existent high-rate recorded data. New Blue Jay firmware has correct behavior in simulations 1.0.14 11/25/2024 Now supports the Featherweight Blue Jay and Blue Jay+ Voice telemetry is more reliable, even with multiple trackers and ground stations New Blue Raven firmware: More robust under-voltage protection to reduce chance of power-up glitches Improved feedback to the phone in the event of unauthorized commands New Blue Jay firmware Improved feedback to the phone in the event of unauthorized commands 1.0.13 11/09/2024 Improved interface for Blue Raven Over-the-Air updates. New Blue Raven firmware that prevents commanding by unauthorized phones. The first phone to connect after power-up is automatically authorized. Improved status display for LoRa and Bluetooth connections in the Devices page. Known issues: When using 2 ground stations and 2 trackers simultaneously, the voice telemetry can have a mixture of data from both trackers 1.0.12 07/29/2024 Now fully supports multiple simultaneous pairs of ground stations and trackers. Improved calculation of tracker pad altitude offsets Exported data file names now uses launch time rather than download time Corrected label for down received packet counters vs up received packet counters Graphing selections are remembered between sessions Known issues: When flying 2 Blue Ravens together, data from one may need to be re-downloaded separately 1.10 05/23/2024 Multiple simultaneous ground stations now supported. Exporting GPS data recorded on the tracker now includes a .kml file for display in Google Earth. Improvements to Channel List feature Voice telemetry improved with lag removed More reliable data downloading 1.09 04/24/2024 Bugs fixed: -Corrected tracker recorded data download -Tracker altitudes now in altitude above ground (AGL) -Improved maps view -Improved voice telemetry -More reliable connection and automatic download when using multiple devices -Improved response to power failure during Blue Raven over-the-air (OTA) update New features: -Define a geofence for the pad area and prep area to provide better status of other rockets in the channel list -Initial Lost Rocket interface (in work) Known issues: -Tracker downloaded data sometimes ends shortly before landing 1.08 04/07/2024 -Corrected new issue with Blue Raven default settings -Improved map view features 1.07 02/25/2024 -Support for older iPhones -Blue Raven Ground test video recording in landscape mode -GPS Tracker Channel scan feature improved 1.06 02/15/2024 Blue Raven: -New firmware with improved apogee detection for abnormal flights -Flight summary data is now exportable along with the detailed time-history data. GPS Tracking: -Now includes live mapping of the ground tracks of the tracker and ground station -Tracker or Ground Station GPS coordinates can be copied to the clipboard -Track to the last known position of any previously-connected tracker -Old tracker information is visually distinct from live data -Improved LoRa signal quality information, including max range -Improved logging of GPS ground station data into an exportable log file 1.05 02/09/2024 GPS Tracking -Point to tracker current position -Check health and status of tracker -Download, graph, and map recorded flight data from tracker -Export tracker data and ground station log -Tracker simulated flight Improved downloads of recorded data from the Blue Ravens 1.04 12/26/2023 Includes a firmware update to build 3a510c7, which improves immunity of output control to radio frequency fields by 700x Data download improvements: -Cleanly continue the download if the Blue Raven connection is interrupted. -Handle the case of two Blue Ravens recording flights with identical liftoff times. 1.03 08/23/2023
Previous Versions
Here you can find the changelog of Featherweight UI since it was posted on our website on 2024-03-21 19:26:48.
The latest version is 1.1.3 and it was updated on 2026-06-24 07:56:45. See below the changes in each version.
Featherweight UI version 1.1.3
Updated At: 2026-06-03
Changes: Version History New features:
Full inter-operability between original ground stations and trackers and Swift ground stations and trackers when using the original channels
Fast scanning of all 3 channel plans when using Swift GS
Swift tracker scans for an open channel before transmitting
Bugs fixed:
Swift LoRa comm is more reliable now with improved time synchronization
Voice telemetry on original trackers and GS is available again
Downloading recorded data is more reliable 1.1.3 5d ago Corrected a previous issue where the LoRa status was showing disconnected when it was actually connected.
Fixes a bug that can cause a device to erroneously show up as a Blue Raven with serial number 0 when it is re-connected to the phone.
Known issues:
1. Voice telemetry is absent
2. In rare cases, if the Swift ground station is Bluetooth-disconnected from the phone and re-connected, it could receive an updated clock time from the phone that is inaccurate enough to cause it to lose sync with the tracker and become LoRa-disconnected. This vulnerability was also present in previous versions. Workaround: Keep the ground station within reach of the phone, especially after the Tracker gets a GPS lock. 1.1.2 May 6 New features:
-Fixed bugs which could cause loss of synchronization and LoRa communication
-Fixed issue with command authorization during connection
-New replay feature shows the rocket tilt during the flight for Blue Raven and Blue Jay flight recordings
-Fixed tracker page display of LoRa connection status
Known issues:
-When changing the LoRa channel of an original tracker, the resulting channel does not match the selected channel
-Channel scanning in the Channel list is not working for Swift, and stops prematurely when using the original Tracker.
-Over-the-horizon relay is not yet supported for the Swift
-Simulated flights are not yet supported for the Swift
-On-board data recording is not yet supported for the Swift. 1.1.1 Apr 29 Build 466 now supports the new Featherweight Swift with basic tracking functionality.
The Swift includes support for the new 240-channel frequency hopping channel plan to reduce LoRa network congestion at large launches
The tracking map view now has live telemetry.
New firmware included for the Blue Jay and Blue Raven, with controlled BLE transmit power to reduce Bluetooth network congestion at large launches 1.1.0 Apr 12 Corrected the text in the dialog box for the over-the-air updates to show correct was/now on build version 1.0.25 Jan 13 -Provided better on-screen instructions in the event that an over-the-air update gets interrupted 1.0.24 Jan 6 - Support for new sensors in Blue Jay 2 and Blue Raven 2
- Blue Jay and Blue Raven: Default apogee settings now include abort for unstable flights if the rocket tilt exceeds 90 degrees within the first 2 seconds after liftoff
- Fixed downloading of tracker and altimeter data from the same flight
- Fixed text to speech feature not working on iOS 26
Known issues: The Blue Jay and Blue Raven require a power cycle once after firmware update is complete. 1.0.23 Jan 2 - Fixed an issue where some of the deployment settings thresholds could be displayed and validated incorrectly. 1.0.22 08/29/2025 -Includes new firmware for the Blue Jay to correct a bug that would erase both sets of recorded flight data in some circumstances
-Improved channel list feature
-Improved sequential downloading when multiple devices have data from the same launch
-Accel calibration now tolerant to temporary disconnections
-My devices list now shows current name and serial number rather than previous version 1.021 08/25/2025 What's new:
-Support for new Blue Jay2 hardware
-Axial & lateral acceleration data now included in Blue Jay flight logs
-Enhanced GPS tracker channel scanning
Bug fixes:
-Fixed LoRa packet success rate display
-Resolved tracker & ground station pairing issues
-Fixed intermittent arming/command issues on Blue Raven & Blue Jay
Known issues:
- If Blue Jay over-the-air update fails, restart the app and ensure it's the only device powered on. Devices may appear off if the update is interrupted.
-Monitoring another user's flights via the channel list can temporarily cause problems re-connecting your ground station to your own tracker. 1.0.20 08/13/2025 Click the middle of the screen to get a voice summary of go for launch
Deployment settings used in a flight are now automatically included with the flight export
Bug fixes:
Channel scan now scans all channels
Improved Bluetooth connection reliability for trackers and ground stations
Improved Bluetooth connection status indications for all devices
Fixed an issue preventing OTA updates for the Blue Raven or Blue Jay while connected to a tracker 1.0.18 03/26/2025 Reliability improvements to several features:
-Data downloads
-Command authorization for Blue Raven and Blue Jay
-Bluetooth connections to trackers and ground stations
-Voice telemetry
Known limitations:
-Over-the-air updates to the Blue Jay or Blue Raven should be performed with all other Featherweight devices turned off. 1.0.17 01/27/2025 Fixed Blue Jay bug that had been corrupting downloaded data in the case where the Blue Jay records until the flash gets full. Includes new Blue Jay firmware.
Fixed bug that sometimes prevented command authorization from completing at power-up. 1.0.16 01/15/2025 Over-the-Air (OTA) updates which could get stuck in certain situations in the last build are now recoverable with this build. 1.0.15 11/27/2024 Improved response to an interrupted Over-the-Air firmware update.
Blue Jay avoids attempting to download non-existent high-rate recorded data.
New Blue Jay firmware has correct behavior in simulations 1.0.14 11/25/2024 Now supports the Featherweight Blue Jay and Blue Jay+
Voice telemetry is more reliable, even with multiple trackers and ground stations
New Blue Raven firmware:
More robust under-voltage protection to reduce chance of power-up glitches
Improved feedback to the phone in the event of unauthorized commands
New Blue Jay firmware
Improved feedback to the phone in the event of unauthorized commands 1.0.13 11/09/2024 Improved interface for Blue Raven Over-the-Air updates.
New Blue Raven firmware that prevents commanding by unauthorized phones. The first phone to connect after power-up is automatically authorized.
Improved status display for LoRa and Bluetooth connections in the Devices page.
Known issues:
When using 2 ground stations and 2 trackers simultaneously, the voice telemetry can have a mixture of data from both trackers 1.0.12 07/29/2024 Now fully supports multiple simultaneous pairs of ground stations and trackers.
Improved calculation of tracker pad altitude offsets
Exported data file names now uses launch time rather than download time
Corrected label for down received packet counters vs up received packet counters
Graphing selections are remembered between sessions
Known issues:
When flying 2 Blue Ravens together, data from one may need to be re-downloaded separately 1.10 05/23/2024 Multiple simultaneous ground stations now supported.
Exporting GPS data recorded on the tracker now includes a .kml file for display in Google Earth.
Improvements to Channel List feature
Voice telemetry improved with lag removed
More reliable data downloading 1.09 04/24/2024 Bugs fixed:
-Corrected tracker recorded data download
-Tracker altitudes now in altitude above ground (AGL)
-Improved maps view
-Improved voice telemetry
-More reliable connection and automatic download when using multiple devices
-Improved response to power failure during Blue Raven over-the-air (OTA) update
New features:
-Define a geofence for the pad area and prep area to provide better status of other rockets in the channel list
-Initial Lost Rocket interface (in work)
Known issues:
-Tracker downloaded data sometimes ends shortly before landing 1.08 04/07/2024 -Corrected new issue with Blue Raven default settings
-Improved map view features 1.07 02/25/2024 -Support for older iPhones
-Blue Raven Ground test video recording in landscape mode
-GPS Tracker Channel scan feature improved 1.06 02/15/2024 Blue Raven:
-New firmware with improved apogee detection for abnormal flights
-Flight summary data is now exportable along with the detailed time-history data.
GPS Tracking:
-Now includes live mapping of the ground tracks of the tracker and ground station
-Tracker or Ground Station GPS coordinates can be copied to the clipboard
-Track to the last known position of any previously-connected tracker
-Old tracker information is visually distinct from live data
-Improved LoRa signal quality information, including max range
-Improved logging of GPS ground station data into an exportable log file 1.05 02/09/2024 GPS Tracking
-Point to tracker current position
-Check health and status of tracker
-Download, graph, and map recorded flight data from tracker
-Export tracker data and ground station log
-Tracker simulated flight
Improved downloads of recorded data from the Blue Ravens 1.04 12/26/2023 Includes a firmware update to build 3a510c7, which improves immunity of output control to radio frequency fields by 700x
Data download improvements:
-Cleanly continue the download if the Blue Raven connection is interrupted.
-Handle the case of two Blue Ravens recording flights with identical liftoff times. 1.03 08/23/2023
Featherweight UI version 1.0.25
Updated At: 2026-01-13
Changes: Corrected the text in the dialog box for the over-the-air updates to show correct was/now on build version
Featherweight UI version 1.0.22
Updated At: 2025-08-29
Changes: Aug 29, 2025
Version 1.0.22
- Fixed an issue where some of the deployment settings thresholds could be displayed and validated incorrectly.
Featherweight UI version 1.0.18
Updated At: 2025-03-26
Changes: Mar 26, 2025
Version 1.0.18
Click the middle of the screen to get a voice summary of go for launch
Deployment settings used in a flight are now automatically included with the flight export
Bug fixes:
Channel scan now scans all channels
Improved Bluetooth connection reliability for trackers and ground stations
Improved Bluetooth connection status indications for all devices
Fixed an issue preventing OTA updates for the Blue Raven or Blue Jay while connected to a tracker
Featherweight UI version 1.0.17
Updated At: 2025-01-27
Changes: Jan 27, 2025
Version 1.0.17
Reliability improvements to several features:
-Data downloads
-Command authorization for Blue Raven and Blue Jay
-Bluetooth connections to trackers and ground stations
-Voice telemetry
Known limitations:
-Over-the-air updates to the Blue Jay or Blue Raven should be performed with all other Featherweight devices turned off.
Featherweight UI version 1.0.15
Updated At: 2024-11-27
Changes: Nov 27, 2024
Version 1.0.15
Over-the-Air (OTA) updates which could get stuck in certain situations in the last build are now recoverable with this build.
Featherweight UI version 1.0.12
Updated At: 2024-07-29
Changes: Jul 29, 2024
Version 1.0.12
Improved interface for Blue Raven Over-the-Air updates.
New Blue Raven firmware that prevents commanding by unauthorized phones. The first phone to connect after power-up is automatically authorized.
Improved status display for LoRa and Bluetooth connections in the Devices page.
Known issues:
When using 2 ground stations and 2 trackers simultaneously, the voice telemetry can have a mixture of data from both trackers
Featherweight UI version 1.10
Updated At: 2024-05-23
Changes: May 23, 2024
Version 1.10
Now fully supports multiple simultaneous pairs of ground stations and trackers.
Improved calculation of tracker pad altitude offsets
Exported data file names now uses launch time rather than download time
Corrected label for down received packet counters vs up received packet counters
Graphing selections are remembered between sessions
Known issues:
When flying 2 Blue Ravens together, data from one may need to be re-downloaded separately
Featherweight UI version 1.09
Updated At: 2024-04-24
Changes: Apr 24, 2024
Version 1.09
Multiple simultaneous ground stations now supported.
Exporting GPS data recorded on the tracker now includes a .kml file for display in Google Earth.
Improvements to Channel List feature
Voice telemetry improved with lag removed
More reliable data downloading
Featherweight UI version 1.08
Updated At: 2024-04-07
Changes: Apr 7, 2024
Version 1.08
Bugs fixed:
-Corrected tracker recorded data download
-Tracker altitudes now in altitude above ground (AGL)
-Improved maps view
-Improved voice telemetry
-More reliable connection and automatic download when using multiple devices
-Improved response to power failure during Blue Raven over-the-air (OTA) update
New features:
-Define a geofence for the pad area and prep area to provide better status of other rockets in the channel list
-Initial Lost Rocket interface (in work)
Known issues:
-Tracker downloaded data sometimes ends shortly before landing
Disclaimer
Official App Store Link
We do not host Featherweight UI on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Apple and passed their terms and conditions to be listed there. We recommend caution when installing it.
The App Store link for Featherweight UI is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
If you have questions regarding this particular app contact the publisher directly. For questions about the functionalities of apps112.com contact us.
