RPN vs bcRPN
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 +
bcRPN
This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.
- Reverse Polish Notation (RPN) input
- Complex number calculations
- Extended precision math
- Unlimited stack depth
- Undo functionality (up to 10 operations)
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This is a RPN (Reverse Polish Notation) Calculator. It supports complex numbers and uses extended precision math for all operations. The stack depth is unlimited. In case a mistake was made, up to 10 operations can be undone. RPN calculators work by entering the numbers on the stack first, then selecting the operation. For example to add 3 + 4, press: 3 Enter 4 +
Screenshots
Verdict
The clearest difference is review sentiment: bcRPN at 80% against RPN's 0%. bcRPN also leads on in-app purchases (none vs 1) and device support (3 vs 1). RPN's advantage is update cadence (monthly vs every 22 months). On price, ads, monetization model and iOS requirement 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. bcRPN asks for nothing beyond the download.
RPN ships an update monthly, bcRPN every 22 months. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.
| Parameter | RPN | bcRPN |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | 80.0% of reviews — better |
| Number of ratings | — | 4 — better |
| Update frequency | Monthly — better | Every 22 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomas Stankiewicz Baldassarri | Paul Wilkins |
Customer experience
RPN
bcRPN
In-app purchases
RPN
- Stack LCD$0.49
bcRPN
No in-app purchases
