250+ iOS apps curated and reviewed
Out of 250+ r47 rpn calculator apps on iOS, 12 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 | 5.0★ (23) | No | Yes | Sep 2026 | |
| 2 |  | Free | — | No | Yes | May 2026 | |
| 3 |  | Free | 3.8★ (22) | No | No | Aug 2026 | |
| 4 |  | $4.99 was $7.99 | 4.7★ (48) | No | No | Aug 2026 | |
| 5 |  | Free | 4.8★ (283) | No | No | Sep 2026 | |
| 6 |  | $3.99 | 4.8★ (238) | No | No | Sep 2026 | |
| 7 |  | Free | 1.0★ (1) | No | No | Aug 2026 | |
| 8 |  | Free | 3.5★ (2) | No | No | May 2026 |
This scientific calculator uses Reverse Polish Notation (RPN) to help you break down complex problems. It offers a full 47-series instruction set with advanced functions and a program editor. The free version includes extensive tutorials and documentation.
This application provides a straightforward reverse Polish notation (RPN) calculator with essential functions and memory operations. It also includes integrated unit conversions for various measurements, allowing for quick conversions directly within the app. The calculator remembers your session, preserving all registers and memory values for future use.
This scientific calculator utilizes a four-level stack and natively handles complex numbers. It allows users to input and view numbers in both polar and rectangular formats, remembering its state and offering 10 memory locations.
