# goRPN vs ThetaCalc

The clearest difference is review sentiment: ThetaCalc at 100% against goRPN's 50%. ThetaCalc also leads on rating (4.3 vs 3.0) and ratings volume (4 vs 1). goRPN's advantage is iOS requirement (9.0 vs 17.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ThetaCalc holds the better App Store score, 4.3 against 3.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 50% of goRPN's written reviews are positive against 100% of ThetaCalc's.

## The numbers

| Metric | goRPN | ThetaCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/gorpn/id1212060693/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/thetacalc/id1521614636/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | Free | Free |
| Size | 12 MB | 1 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joel Perry](https://appshunter.io/developer/972887837) | [Felix Stehli](https://appshunter.io/developer/1521614638) |

## What reviewers say

### goRPN

[App page](https://appshunter.io/ios/app/gorpn/id1212060693)

This app emulates the functionality of the HP-16C calculator using a Reverse Polish Notation (RPN) input method. It is a minimal, open-source utility designed for users familiar with RPN calculators.

**Highlights:** RPN calculator, HP-16C stack emulation, Open-source software, Minimalist design, Future functionality expansion

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ThetaCalc

[App page](https://appshunter.io/ios/app/thetacalc/id1521614636)

This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.

**Highlights:** Reverse Polish Notation (RPN) calculator, User-programmable functions, JavaScript equation support, Extensible functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is goRPN free?

goRPN is free to download, with no in-app purchases.

### Is ThetaCalc free?

ThetaCalc is free to download, with no in-app purchases.

### Which has better reviews, goRPN or ThetaCalc?

ThetaCalc is rated higher. goRPN averages 3.0 out of 5 from 1 ratings, while ThetaCalc averages 4.3 from 4 ratings.

### Do goRPN or ThetaCalc have ads?

Neither goRPN nor ThetaCalc shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*