ThetaCalc2.0 - App Store
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Publisher Description
ThetaCalc is a RPN (Reverse Polish Notation) calculator which can be extended by functions and equations programmed by the user in JavaScript.
Version History Improved JS editor (syntax highlighting, auto indenting) 2.0 May 17 Minor corrections, additional display theme. 1.9 09/16/2025 Changed rounding from bankers algorithm to standard rounding (half up)
Option to set font size of X
Two new calculator themes 1.8 03/11/2025 Slightly improved handling of JavaScript errors
Calculator color themes
Increased number of user assignable buttons
Minor improvements and bug fixes 1.7 01/24/2025 Minor bug fixes and improvements. 1.6 10/21/2024 Fixed bug: Incorrect stack lift behavior in conjunction with +/- button.
Minor improvements. 1.5 01/31/2023 New panel for base conversions and logical bit operations, choosable number group separator, minor bug fixes. 1.4 06/13/2021 Added unit conversions. Editor windows are now zoomable. Minor corrections. 1.3 03/15/2021 A parameter definition for functions and programs can now consist of multiple parts, where prompts and their corresponding values are separated by commas. 1.2 12/22/2020 Improved code editing. 1.1 10/18/2020 1.0 07/06/2020
About ThetaCalc
The company that develops ThetaCalc is Felix Stehli. The latest version released by its developer is 2.0.
To install ThetaCalc on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-13 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the ThetaCalc as malware if the download link is broken.
How to install ThetaCalc on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the ThetaCalc is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After ThetaCalc is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 2.0
posted on 2026-10-13
Version History Improved JS editor (syntax highlighting, auto indenting) 2.0 May 17 Minor corrections, additional display theme. 1.9 09/16/2025 Changed rounding from bankers algorithm to standard rounding (half up)
Option to set font size of X
Two new calculator themes 1.8 03/11/2025 Slightly improved handling of JavaScript errors
Calculator color themes
Increased number of user assignable buttons
Minor improvements and bug fixes 1.7 01/24/2025 Minor bug fixes and improvements. 1.6 10/21/2024 Fixed bug: Incorrect stack lift behavior in conjunction with +/- button.
Minor improvements. 1.5 01/31/2023 New panel for base conversions and logical bit operations, choosable number group separator, minor bug fixes. 1.4 06/13/2021 Added unit conversions. Editor windows are now zoomable. Minor corrections. 1.3 03/15/2021 A parameter definition for functions and programs can now consist of multiple parts, where prompts and their corresponding values are separated by commas. 1.2 12/22/2020 Improved code editing. 1.1 10/18/2020 1.0 07/06/2020
version 1.9
posted on 2025-09-16
Sep 16, 2025
Version 1.9
Minor corrections, additional display theme.
version 1.9
posted on 2025-09-16
Minor corrections, additional display theme.
version 1.8
posted on 2025-03-11
Mar 11, 2025
Version 1.8
Changed rounding from bankers algorithm to standard rounding (half up)
Option to set font size of X
Two new calculator themes
version 1.7
posted on 2025-01-24
Jan 24, 2025
Version 1.7
Slightly improved handling of JavaScript errors
Calculator color themes
Increased number of user assignable buttons
Minor improvements and bug fixes
version 1.6
posted on 2024-10-21
Oct 21, 2024
Version 1.6
Minor bug fixes and improvements.
version 1.5
posted on 2023-01-31
Jan 31, 2023
Version 1.5
Fixed bug: Incorrect stack lift behavior in conjunction with +/- button.
Minor improvements.
Disclaimer
Official App Store Link
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