About Isosceles Triangle PRO
The best app to calculate all quantities of an isosceles triangle. You must enter some quantities like an angle and a length. The algorithm searches the formulas of the missing quantities, shows them and calculates the...
The best app to calculate all quantities of an isosceles triangle. You must enter some quantities like an angle and a length. The algorithm searches the formulas of the missing quantities, shows them and calculates the results. The calculation of an isosceles triangle depends on one certain characteristic. Either it is obtuse angled or acute angled. Both is handled in this app. You just have to touch the button to switch the appearance of your isosceles triangle. The length of the decimal place can be changed. The algorithm shows when rounding or wrong values lead to an opposition. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Content ] - all important quantities for the isosceles triangle - formulas for all important quantities of an isosceles triangle - infographic to illustrate the topic - search bar to find the desired quantity - history function to save the input - detailed solution - positive numbers, decimals and fractions are supported - changeable decimal place - changeable appearance of your triangle (obtuse angled - acute angled) - no ads! [ Usage ] - there are several fields for entering the values using a special keyboard - if values are missing, all fields are highlighted in orange - if values are conflicting or wrong (e.g. negative lengths), one affected field is highlighted in red - every value must be positive - if a value is no number, it is highlighted in red - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a button - solutions can be shared [ Acute angled ] - gamma must be less than 90° - alpha must be greater than 45° and less than 90° [ Obtuse angled ] - gamma must be greater than or equal 90° and less than 180° - alpha must be less than or equal 45°
Version History Bringing all apps to the same security standard. Critical storage behaviour for solutions has been fixed. By the way - I run many apps with different math topics. If you like this one: Check them out as well! I always do my best to keep a high standard on my apps. If something does not meet the expectations, do not hesitate to contact me. 2.2.0 Jun 19 There were some major fixes and adjustments for a more stable behaviour of the solution storage and loading. Therefore some database changes were made in the background. There are no performance losses and the functionality does not change. The background tasks are only done once within milliseconds. Following behaviour may occur (only temporary): - stored calculations have to be tapped twice to load fully - the order of the stored solutions may change If there are some losses of solutions do not hesitate to contact me and tell me the number of lost solutions + affected app. I will find a solution for this. Kind regards, Alex (the Dev) 2.1.10 Jun 6 Made a fix for correct letter appearance for Asian languages. Now warnings and issues for the solutions are displayed correctly. 2.1.9 Jun 2 Minor improvements. New crash report system so that maintenance work is much more efficient. 2.1.8 May 1 - fixes to improve stability of the app - repairing some image displays which were broken according to the new iOS version 2.1.7 Mar 24 General maintenance work. I improved some aspects, mainly UI issues. 2.1.6 Feb 21 We updated our privacy policy and improved parts of the app analytics to address privacy concerns. 2.1.5 11/10/2025 Too big numbers sometimes caused crashes. This has been fixed as well. 2.1.4 10/25/2025 - The display of the solutions was corrected (should improve readability) - The feedback system for wrong inputs was improved - The storage feature for used calculations was reworked and no longer saves duplicates 2.1.3 10/22/2025 We check the performance of some service tasks to improve some service functions. By the way - did you know that you can contact us easily? For this check the menu button on the top left. Do not hesitate to contact us if you have any suggestions or issues. 2.1.2 05/25/2025 Bug fixes and performance improvements 2.1.1 05/08/2025 We still improve the app. Fixed some minor bugs. Wish you a nice day! 2.01 04/13/2025 Huge update: - units can be changed!! - Dark mode - short messages will support you when you enter incorrect inputs - new Onboarding for a better introduction into the app - expanded and improved the menu list for options and further information - latest apps can be accessed now by the menu list - Russian translation has been reworked - crashes caused by the YouTube Videos has been fixed 2.00 10/10/2024 - added video tutorials at the end of the calculation - added a link to our discord server in the menu on the left - minor fixes 1.20 06/24/2024 - we added an onboarding for better explanation of the app usage - we improved the feedback from the UI when wrong values were entered - some optimisations for app performance and size 1.14 11/01/2023 - Hindi and Indonesian translation added 1.13 11/14/2022 - Bugfix: red highlight now is placed correctly and shows the wrong input - Minor fixes 1.12 06/03/2022 - Bugfixing 1.11 04/16/2022 - search bar added - bugfixes 1.1 03/27/2022 1.0 07/06/2021
Previous Versions
Here you can find the changelog of Isosceles Triangle PRO since it was posted on our website on 2023-09-06 18:16:11.
The latest version is 2.2.0 and it was updated on 2026-07-02 07:01:16. See below the changes in each version.
Isosceles Triangle PRO version 2.2.0
Updated At: 2026-07-02
Changes: Version History Bringing all apps to the same security standard. Critical storage behaviour for solutions has been fixed.
By the way - I run many apps with different math topics. If you like this one: Check them out as well!
I always do my best to keep a high standard on my apps. If something does not meet the expectations, do not hesitate to contact me. 2.2.0 Jun 19 There were some major fixes and adjustments for a more stable behaviour of the solution storage and loading. Therefore some database changes were made in the background. There are no performance losses and the functionality does not change. The background tasks are only done once within milliseconds. Following behaviour may occur (only temporary):
- stored calculations have to be tapped twice to load fully
- the order of the stored solutions may change
If there are some losses of solutions do not hesitate to contact me and tell me the number of lost solutions + affected app. I will find a solution for this.
Kind regards, Alex (the Dev) 2.1.10 Jun 6 Made a fix for correct letter appearance for Asian languages. Now warnings and issues for the solutions are displayed correctly. 2.1.9 Jun 2 Minor improvements. New crash report system so that maintenance work is much more efficient. 2.1.8 May 1 - fixes to improve stability of the app
- repairing some image displays which were broken according to the new iOS version 2.1.7 Mar 24 General maintenance work. I improved some aspects, mainly UI issues. 2.1.6 Feb 21 We updated our privacy policy and improved parts of the app analytics to address privacy concerns. 2.1.5 11/10/2025 Too big numbers sometimes caused crashes. This has been fixed as well. 2.1.4 10/25/2025 - The display of the solutions was corrected (should improve readability)
- The feedback system for wrong inputs was improved
- The storage feature for used calculations was reworked and no longer saves duplicates 2.1.3 10/22/2025 We check the performance of some service tasks to improve some service functions. By the way - did you know that you can contact us easily? For this check the menu button on the top left. Do not hesitate to contact us if you have any suggestions or issues. 2.1.2 05/25/2025 Bug fixes and performance improvements 2.1.1 05/08/2025 We still improve the app. Fixed some minor bugs.
Wish you a nice day! 2.01 04/13/2025 Huge update:
- units can be changed!!
- Dark mode
- short messages will support you when you enter incorrect inputs
- new Onboarding for a better introduction into the app
- expanded and improved the menu list for options and further information
- latest apps can be accessed now by the menu list
- Russian translation has been reworked
- crashes caused by the YouTube Videos has been fixed 2.00 10/10/2024 - added video tutorials at the end of the calculation
- added a link to our discord server in the menu on the left
- minor fixes 1.20 06/24/2024 - we added an onboarding for better explanation of the app usage
- we improved the feedback from the UI when wrong values were entered
- some optimisations for app performance and size 1.14 11/01/2023 - Hindi and Indonesian translation added 1.13 11/14/2022 - Bugfix: red highlight now is placed correctly and shows the wrong input
- Minor fixes 1.12 06/03/2022 - Bugfixing 1.11 04/16/2022 - search bar added
- bugfixes 1.1 03/27/2022 1.0 07/06/2021
Isosceles Triangle PRO version 2.2.0
Updated At: 2026-06-21
Changes: Version History Bringing all apps to the same security standard. Critical storage behaviour for solutions has been fixed.
By the way - I run many apps with different math topics. If you like this one: Check them out as well!
I always do my best to keep a high standard on my apps. If something does not meet the expectations, do not hesitate to contact me. 2.2.0 1d ago There were some major fixes and adjustments for a more stable behaviour of the solution storage and loading. Therefore some database changes were made in the background. There are no performance losses and the functionality does not change. The background tasks are only done once within milliseconds. Following behaviour may occur (only temporary):
- stored calculations have to be tapped twice to load fully
- the order of the stored solutions may change
If there are some losses of solutions do not hesitate to contact me and tell me the number of lost solutions + affected app. I will find a solution for this.
Kind regards, Alex (the Dev) 2.1.10 Jun 6 Made a fix for correct letter appearance for Asian languages. Now warnings and issues for the solutions are displayed correctly. 2.1.9 Jun 2 Minor improvements. New crash report system so that maintenance work is much more efficient. 2.1.8 May 1 - fixes to improve stability of the app
- repairing some image displays which were broken according to the new iOS version 2.1.7 Mar 24 General maintenance work. I improved some aspects, mainly UI issues. 2.1.6 Feb 21 We updated our privacy policy and improved parts of the app analytics to address privacy concerns. 2.1.5 11/10/2025 Too big numbers sometimes caused crashes. This has been fixed as well. 2.1.4 10/25/2025 - The display of the solutions was corrected (should improve readability)
- The feedback system for wrong inputs was improved
- The storage feature for used calculations was reworked and no longer saves duplicates 2.1.3 10/22/2025 We check the performance of some service tasks to improve some service functions. By the way - did you know that you can contact us easily? For this check the menu button on the top left. Do not hesitate to contact us if you have any suggestions or issues. 2.1.2 05/25/2025 Bug fixes and performance improvements 2.1.1 05/08/2025 We still improve the app. Fixed some minor bugs.
Wish you a nice day! 2.01 04/13/2025 Huge update:
- units can be changed!!
- Dark mode
- short messages will support you when you enter incorrect inputs
- new Onboarding for a better introduction into the app
- expanded and improved the menu list for options and further information
- latest apps can be accessed now by the menu list
- Russian translation has been reworked
- crashes caused by the YouTube Videos has been fixed 2.00 10/10/2024 - added video tutorials at the end of the calculation
- added a link to our discord server in the menu on the left
- minor fixes 1.20 06/24/2024 - we added an onboarding for better explanation of the app usage
- we improved the feedback from the UI when wrong values were entered
- some optimisations for app performance and size 1.14 11/01/2023 - Hindi and Indonesian translation added 1.13 11/14/2022 - Bugfix: red highlight now is placed correctly and shows the wrong input
- Minor fixes 1.12 06/03/2022 - Bugfixing 1.11 04/16/2022 - search bar added
- bugfixes 1.1 03/27/2022 1.0 07/06/2021
Isosceles Triangle PRO version 2.1.8
Updated At: 2026-05-18
Changes: Version History Minor improvements. New crash report system so that maintenance work is much more efficient. 2.1.8 May 1 - fixes to improve stability of the app
- repairing some image displays which were broken according to the new iOS version 2.1.7 Mar 24 General maintenance work. I improved some aspects, mainly UI issues. 2.1.6 Feb 21 We updated our privacy policy and improved parts of the app analytics to address privacy concerns. 2.1.5 11/10/2025 Too big numbers sometimes caused crashes. This has been fixed as well. 2.1.4 10/25/2025 - The display of the solutions was corrected (should improve readability)
- The feedback system for wrong inputs was improved
- The storage feature for used calculations was reworked and no longer saves duplicates 2.1.3 10/22/2025 We check the performance of some service tasks to improve some service functions. By the way - did you know that you can contact us easily? For this check the menu button on the top left. Do not hesitate to contact us if you have any suggestions or issues. 2.1.2 05/25/2025 Bug fixes and performance improvements 2.1.1 05/08/2025 We still improve the app. Fixed some minor bugs.
Wish you a nice day! 2.01 04/13/2025 Huge update:
- units can be changed!!
- Dark mode
- short messages will support you when you enter incorrect inputs
- new Onboarding for a better introduction into the app
- expanded and improved the menu list for options and further information
- latest apps can be accessed now by the menu list
- Russian translation has been reworked
- crashes caused by the YouTube Videos has been fixed 2.00 10/10/2024 - added video tutorials at the end of the calculation
- added a link to our discord server in the menu on the left
- minor fixes 1.20 06/24/2024 - we added an onboarding for better explanation of the app usage
- we improved the feedback from the UI when wrong values were entered
- some optimisations for app performance and size 1.14 11/01/2023 - Hindi and Indonesian translation added 1.13 11/14/2022 - Bugfix: red highlight now is placed correctly and shows the wrong input
- Minor fixes 1.12 06/03/2022 - Bugfixing 1.11 04/16/2022 - search bar added
- bugfixes 1.1 03/27/2022 1.0 07/06/2021
Isosceles Triangle PRO version 2.1.6
Updated At: 2026-02-21
Changes: General maintenance work. I improved some aspects, mainly UI issues.
Isosceles Triangle PRO version 2.1.5
Updated At: 2025-11-10
Changes: We updated our privacy policy and improved parts of the app analytics to address privacy concerns.
Isosceles Triangle PRO version 2.1.2
Updated At: 2025-05-25
Changes: May 25, 2025
Version 2.1.2
We check the performance of some service tasks to improve some service functions. By the way - did you know that you can contact us easily? For this check the menu button on the top left. Do not hesitate to contact us if you have any suggestions or issues.
Isosceles Triangle PRO version 2.1.1
Updated At: 2025-05-08
Changes: May 8, 2025
Version 2.1.1
Bug fixes and performance improvements
Isosceles Triangle PRO version 2.01
Updated At: 2025-04-13
Changes: Apr 13, 2025
Version 2.01
We still improve the app. Fixed some minor bugs.
Wish you a nice day!
Isosceles Triangle PRO version 2.00
Updated At: 2024-10-10
Changes: Oct 10, 2024
Version 2.00
Huge update:
- units can be changed!!
- Dark mode
- short messages will support you when you enter incorrect inputs
- new Onboarding for a better introduction into the app
- expanded and improved the menu list for options and further information
- latest apps can be accessed now by the menu list
- Russian translation has been reworked
- crashes caused by the YouTube Videos has been fixed
Isosceles Triangle PRO version 1.20
Updated At: 2024-06-24
Changes: Jun 24, 2024
Version 1.20
- added video tutorials at the end of the calculation
- added a link to our discord server in the menu on the left
- minor fixes
Disclaimer
Official App Store Link
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