248+ iOS apps & games curated and reviewed
The best smart slide rule apps and games on iPhone average 4.3★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | $0.99 | 5.0★ (1) | No | No | Aug 2026 | |
| 2 |  | Free | 5.0★ (14) | No | No | May 2026 | |
| 3 |  | Free | 4.5★ (6.6K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 4.6★ (4.3K) | No | Yes | Sep 2026 | |
| 5 |  | $0.99 | 4.9★ (9) | No | Yes | Aug 2026 | |
| 6 |  | $0.99 | 1.0★ (1) | No | No | Sep 2026 | |
| 7 |  | Free | 4.7★ (96K) | No | No | Sep 2026 | |
| 8 |  | Free | — | No | Yes | Jul 2026 |
This app simulates a mechanical analog calculating tool, offering various logarithmic scales for multiplication, division, and trigonometric functions. It includes instructions on how to use the slide rule, making it a learning tool for this historical device.
This app digitally recreates various types of slide rules, offering features not possible on physical models like color options and numeric displays. It includes a slideshow of famous slide rules and is best experienced on larger devices.
Engage your brain with a fun trivia crossword puzzle game. Explore different countries, learn new facts, and solve riddles. Collect book buddies and enjoy classic art and music for a relaxing, enriching experience.
