Circle and Sphere Pro 2.1.8 - App Store

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About Circle and Sphere Pro

This app calculates all quantities of a sphere (body of a sphere, circle, all parts of sector and segment). Therefore you must enter some variables (like the radius of a circle and the central angle). The algorithm...

This app calculates all quantities of a sphere (body of a sphere, circle, all parts of sector and segment). Therefore you must enter some variables (like the radius of a circle and the central angle). The algorithm searches the formulas of the missing quantities, shows them and calculates the results. 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 circle and sphere calculation - formulas for all important quantities of a sphere, circle, sector and the segment - infographic to illustrate the topic - search bar to find the desired quantity - history function to save input - detailed solution - positive numbers, decimals and fractions are supported - 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 oppositions (like "r = 1 and d = 3"), one affected field is highlighted in red - every value must be positive - maximum of alpha is 360° - beta must be less than 90° - 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

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 11/11/2025 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 1.18 11/01/2023 - Hindi and Indonesian translation added 1.17 11/14/2022 - Bugfix: red highlight now is placed correctly and shows the wrong input - Minor fixes 1.16 06/03/2022 - Bugfixing 1.14 04/16/2022 - search bar added - bugfixes 1.13 03/27/2022 Have a great holiday! We fixed some bugs. 1.12 06/28/2021 - small fixing 1.11 05/18/2021 - added French, Spanish, Portuguese, Korean, Chinese, Japanese and Russian - improved the handling of wrong inputs - added helping image in solution view 1.1 05/17/2021 1.0 04/23/2021

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Previous Versions

Here you can find the changelog of Circle and Sphere Pro since it was posted on our website on 2023-09-05 23:22:08. The latest version is 2.1.8 and it was updated on 2026-06-23 22:46:44. See below the changes in each version.

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