This app is a photo-realistic simulation of the classic HP-25 scientific calculator. It offers advanced programming features, a vast function library, and modern enhancements for enhanced usability on iOS devices.






249+ iOS apps & games curated and reviewed
RPN is the household name in cuvee software, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $2.99 | 4.3★ (10) | No | No | Oct 2026 | ||
| 2 | Free | 4.7★ (11) | No | No | Nov 2026 | ||
| 3 | $0.99 | 4.8★ (19) | No | No | Oct 2026 | ||
| 4 | $3.99 | 4.6★ (17) | No | No | Oct 2026 | ||
| 5 | $1.99 | 4.4★ (14) | No | No | Nov 2026 | ||
| 6 | $1.99 | 5.0★ (8) | No | No | Oct 2026 | ||
| 7 | $2.99 | 5.0★ (8) | No | No | Oct 2026 | ||
| 8 | $1.99 | 5.0★ (9) | No | No | Oct 2026 |






This app is a photo-realistic simulation of the classic HP-25 scientific calculator. It offers advanced programming features, a vast function library, and modern enhancements for enhanced usability on iOS devices.




This app is a faithful simulation of a rare 1974 financial calculator, offering all its original functions with enhanced features like more memory registers and a visual stack display. It's designed for users who appreciate vintage technology and need precise financial calculations.




This app meticulously recreates the functionality and appearance of a 1973 scientific calculator. It offers a photo-realistic interface with animated keys and includes all original functions, plus a "secret" stopwatch. Users can choose between full-speed or simulated original processing speeds.