120+ iOS apps & games curated and reviewed
Digital Slide Rule is the household name in slide rule, but it's far from the only option. We track 120+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (14) | No | No | May 2026 | |
| 2 |  | $0.99 | 4.8★ (4) | No | No | Aug 2026 | |
| 3 |  | $0.99 | 1.0★ (1) | No | No | Sep 2026 | |
| 4 |  | $0.99 | 5.0★ (1) | No | No | Oct 2026 | |
| 5 |  | $0.99 | 4.6★ (9) | No | No | Oct 2026 | |
| 6 |  | Free | 1.0★ (1) | No | No | May 2026 | |
| 7 |  | Free | 4.8★ (26) | No | No | Jul 2026 | |
| 8 |  | Free | 3.0★ (2) | No | No | Oct 2026 |
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.
Learn to use a classic slide rule with this app. It offers precise calculations and an "auto-slide-rule" mode to demonstrate operations. Save and reuse slider positions for frequent calculations.
Simulates a mechanical analog computer for scientific and engineering calculations. Perform multiplication, division, roots, and trigonometric functions with a digital slide rule.
