ThetaCalc

Name: ThetaCalc
Rating: 4.3 (4 reviews)
Author: Felix Stehli

Utilities

Free · Designed for iPad. Not verified for macOS.

4 Ratings
Ages

4+
Years
Category

Utilities
Developer

Felix Stehli
Language

EN
English
Size

1.5
MB

ThetaCalc is a RPN (Reverse Polish Notation) calculator which can be extended by functions and equations programmed by the user in JavaScript.

Ratings & Reviews

4.3

out of 5

4 Ratings

Like HP42 or DM42 with Javascript
08/08/2022

Deuce McDropper
This calculator is an RPN calculator like the HP42S or DM42 but instead of RPL it uses Javascript for its programming model. This is seriously amazing! I have a bunch of other RPN calculators for iOS and this one blows them all out of the water in every way.
Like HP42 or DM42 with Javascript
08/08/2022

Deuce McDropper

This calculator is an RPN calculator like the HP42S or DM42 but instead of RPL it uses Javascript for its programming model. This is seriously amazing! I have a bunch of other RPN calculators for iOS and this one blows them all out of the water in every way.
Well thought out JavaScript extensible RPN calculator
12/09/2020

work_to_live
There’s no end to what you can do with this calculator!If you need a calculator to do something unique, you can probably get it done with ThetaCalc.I wanted to generate a specialized flightplan for an online flight simulator. No problem, ThetaCalc was up to the task. Then for maximum usability, I needed to generate the output as an XML file. Once again, no problem.It’s so sweet to have this programmability in the palm of your hand.
Well thought out JavaScript extensible RPN calculator
12/09/2020

work_to_live

There’s no end to what you can do with this calculator!If you need a calculator to do something unique, you can probably get it done with ThetaCalc.I wanted to generate a specialized flightplan for an online flight simulator. No problem, ThetaCalc was up to the task. Then for maximum usability, I needed to generate the output as an XML file. Once again, no problem.It’s so sweet to have this programmability in the palm of your hand.

Minor corrections, additional display theme.

Version 1.9 09/16/2025

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: Felix Stehli
Size: 1.5 MB
Category: Utilities
Compatibility: Requires iOS 17.6 or later.

iPhone
Requires iOS 17.6 or later.

iPad
Requires iPadOS 17.6 or later.

Mac
Requires macOS 15 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.3 or later.
Languages: English
Age Rating: 4+

4+

Learn More