RPN vs goRPN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RPN
This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.
- Reverse Polish Notation (RPN) input
- Stack-based operation
- Intuitive digit and operation buttons
- Clear result display
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Simple reverse polish notation calculator. To make an operation you tap the number using the digit buttons. When you want to insert the number into the stack you press the orange button "Enter". When you're done inserting the numbers just tap the operation to do it. The result will be displayed but not put again into stack. Example: 6+7 is 6 enter, 7 enter +
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
Screenshots
Verdict
The clearest difference is review sentiment: goRPN at 50% against RPN's 0%. goRPN also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 17.0). On price, ads, monetization model and device support 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. RPN sells 1 one-off in-app purchase. goRPN asks for nothing beyond the download.
| Parameter | RPN | goRPN |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomas Stankiewicz Baldassarri | Joel Perry |
Customer experience
RPN
goRPN
In-app purchases
RPN
- Stack LCD$0.49
goRPN
No in-app purchases
