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 | Aug 2026 |
| 3 |  | Free | 3.6★ (27) | Yes | No | Jun 2026 |
| 4 |  | Free | — | No | No | Aug 2026 |
| 5 |  | Free | 4.6★ (9) | Yes | Yes | Aug 2026 |
| 6 |  | Free | 5.0★ (5) | Yes | No | Aug 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.
Instantly calculate resistor resistance values from color codes (3-6 bands). Includes Ohm's Law and Watt's Law calculators for voltage, current, and power. Ideal for electronics enthusiasts and professionals.
This utility helps you determine the resistance value of resistors by interpreting their colored bands. It supports 3, 4, 5, and 6 band resistors, visually displaying your selections and the calculated resistance and tolerance.
Quickly identify the value of resistors using their color bands. This utility tool simplifies electronics calculations for hobbyists and professionals alike.
Instantly identify and calculate resistor values using your iPhone camera. This tool eliminates the need for manual color band reading and charts, offering quick results for engineers, hobbyists, and students. Save your scans and organize them into projects for efficient workflow.
Instantly decode resistor color bands, calculate exact values, and convert SMD resistor markings. This app provides essential tools for electronics students, technicians, and hobbyists with a clean interface and fast processing.
Point your phone's camera at a resistor to instantly identify its value. Currently supports 4-band carbon film resistors with a 5% tolerance.
This tool simplifies resistor calculations for electronics enthusiasts, students, and professionals. It accurately decodes resistor color codes and performs series/parallel calculations for complex circuit analysis. Avoid manual errors and streamline your electronics projects.
This app provides a comprehensive suite of tools and calculators for electronics engineers, students, and hobbyists. It includes numerous calculators for resistors, LEDs, capacitors, Ohm's law, and more, alongside useful tables and unit converters.
This app provides a comprehensive suite of calculators and reference tools for electronics enthusiasts and professionals. It includes features for component identification, circuit calculations, and electrical property analysis, aiding in both study and practical work.
Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.