240+ iOS apps curated and reviewed
Out of 240+ resistor code calculators apps on iOS, 18 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 | — | Yes | No | Jul 2026 | |
| 2 |  | Free | 4.9★ (60) | No | No | Sep 2026 | |
| 3 |  | Free | 3.6★ (27) | Yes | No | Jun 2026 | |
| 4 |  | Free | — | No | No | Sep 2026 | |
| 5 |  | Free | 4.6★ (9) | Yes | Yes | Aug 2026 | |
| 6 |  | Free | 5.0★ (5) | Yes | No | Sep 2026 | |
| 7 |  | Free | — | Yes | No | Aug 2026 | |
| 8 |  | Free | 4.0★ (1) | No | No | May 2026 |
Easily determine the resistance value of electronic components. Simply select the number of color bands on your resistor and input the colors one by one to instantly get the resistance and tolerance. This tool simplifies a common electronics task.
Easily determine the resistance value of electronic components using their color bands. This reference tool supports both 4 and 5-band resistors, making it ideal for makers, engineers, and students working with electronics projects.
