Calculator RPN vs bcRPN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator RPN
This scientific calculator offers Reverse Polish Notation (RPN) for faster calculations. It includes 54 mathematical functions, coordinate conversions, and unit conversions, all within a simple interface.
- RPN calculation mode
- 54 mathematical functions
- Trigonometry (simple and hyperbolic)
- Coordinate and unit conversions
- Degrees and radians support
- Simple interface
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On this calculator you will be able to benefit from all the functions of a scientific calculator and RPN with the new iOS calculator. Thanks to the RPN mode you will be able to calculate sums at great speed which greatly reduces the typing. With a simple and uncluttered interface design, this calculaor includes 54 mathematical functions such as : • basic functions like natural logarythms, square roots and factorials • trigonometry (simple and hyperbolic) • it convertes polar and rectangular coordinates, decimal hours, hours, minutes and seconds • it can calculate degrees and radians And much more This calculator uses the very efficient and much talked about RPN system used by engineers and scientists, now on iOS.
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 price: bcRPN at Free against Calculator RPN's $4.99. bcRPN also leads on review sentiment (80% vs 60%). Calculator RPN's advantage is update cadence (every 3 weeks vs every 22 months) and ratings volume (48 vs 8). On rating, 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
bcRPN is free to download; Calculator RPN costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for Calculator RPN against 4.8 for bcRPN. That said, the two scores are not equally well evidenced: Calculator RPN has 48 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 60% of Calculator RPN's written reviews are positive against 80% of bcRPN's.
Calculator RPN ships an update every 3 weeks, bcRPN every 22 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Calculator RPN | bcRPN |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.7 (48 ratings) | 4.8 (8 ratings) — better |
| Positive reviews | 60.0% of reviews | 80.0% of reviews — better |
| Number of ratings | 48 — better | 8 |
| Update frequency | Every 3 weeks — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 16 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Benjamin Pisano | Paul Wilkins |
Customer experience
Calculator RPN
bcRPN
In-app purchases
Calculator RPN
No in-app purchases
bcRPN
No in-app purchases
