ThetaCalc

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

By: Felix Stehli App

Utilities

Overview

Version:

2.0

Last updated: 2026-05-17

Ranking

#508,028 ▼ 65

Overall

Features & Capabilities

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

User Growth & Download Statistics

App

By:

Felix Stehli

Rating:

4.30

(4)

Version:

2.0 Last updated: 2026-05-17

Version code:

885717441

Creation date:

2020-07-06

Compatible devices:

Size:

1.34MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-09-01

Compare stats and ranking:

Ranking

# 508,028 ▼ 65

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Felix Stehli

Apple Apps Store

https://apps.apple.com/us/app/thetacalc/id1521614636

Website:

https://grayfrog.net/iOS_Apps/ThetaCalc/

User Reviews

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.

by De*****, 2022-08-08

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.