goRPN vs ThetaCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
goRPN
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.
- RPN calculator
- HP-16C stack emulation
- Open-source software
- Minimalist design
- Future functionality expansion
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goRPN is an RPN calculator, with a stack modeled on the HP-16C. It is currently quite minimal, but will eventually adopt more of the functionality of the 16C. goRPN is open-source software. If you would like to contribute, get the source at https://www.github.com/joel-perry/goRPN
ThetaCalc
This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.
- Reverse Polish Notation (RPN) calculator
- User-programmable functions
- JavaScript equation support
- Extensible functionality
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ThetaCalc is a RPN (Reverse Polish Notation) calculator which can be extended by functions and equations programmed by the user in JavaScript.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | goRPN | ThetaCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 4.3 (4 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 4 — better |
| Update frequency | — | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 12 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Joel Perry | Felix Stehli |
Customer experience
goRPN
ThetaCalc
In-app purchases
goRPN
No in-app purchases
ThetaCalc
No in-app purchases
