247+ iOS apps & games curated and reviewed
The best resistor tools apps and games on iPhone average 4.2★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (10) | No | Yes | Sep 2026 | |
| 2 |  | Free | 3.0★ (3) | Yes | No | Sep 2026 | |
| 3 |  | $1.99 | — | No | No | Sep 2026 | |
| 4 |  | $0.99 | 4.0★ (1) | No | No | May 2026 | |
| 5 |  | Free | 4.0★ (1) | No | No | May 2026 | |
| 6 |  | Free | 4.9★ (60) | No | No | Oct 2026 | |
| 7 |  | Free | 3.6★ (5) | Yes | No | May 2026 | |
| 8 |  | Free | — | No | No | Sep 2026 |
This utility app provides a suite of tools for calculating and determining resistor values. It assists hobbyists and engineers with series, parallel, and voltage divider calculations, as well as inverting amplifier gain.
This application simplifies electronic circuit calculations with tools for series/parallel resistance, LED current limiting, and three-phase circuit conversions. It also features a resistor color code decoder for quick component identification.
