243+ iOS apps curated and reviewed
Out of 243+ no equal rpn calculator apps on iOS, 15 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (7) | Yes | No | May 2026 | |
| 2 |  | Free | — | No | Yes | Jul 2026 | |
| 3 |  | $4.99 was $7.99 | 4.7★ (48) | No | No | Aug 2026 | |
| 4 |  | $0.99 | — | No | No | Aug 2026 | |
| 5 |  | $3.99 | 4.8★ (238) | No | No | Aug 2026 | |
| 6 |  | Free | — | No | Yes | May 2026 | |
| 7 |  | Free | — | No | No | May 2026 | |
| 8 |  | Free | 3.8★ (22) | No | No | Aug 2026 |
This scientific calculator utilizes Reverse Polish Notation (RPN) for efficient complex calculations, mirroring the functionality of classic HP calculators. It features a continuously visible stack for better tracking and includes 10 memory registers, plus a dedicated quadratic equation solver.
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.
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.
