Useful
Useful app and simple to use
Archived App (Last seen on 22 Apr 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
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About
Easily determine the value and tolerance of 4-band resistors with a visual representation. Includes an Ohm's Law calculator for voltage, current, and resistance calculations.
✓4-band resistor value calculation
✓Tolerance calculation
✓Color code visualization
✓Ohm's Law calculator
✓Voltage, current, resistance calculation
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What's New in Resistor Color Calculator
1.1
December 20, 2016
This app has been updated by Apple to display the Apple Watch app icon. -Updated layout
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FAQ
What is the Resistor Color Calculator app?
The Resistor Color Calculator app helps you determine the value and tolerance of standard 4-band resistors. It also includes a handy Ohm's Law calculator for electrical calculations.
Does the Resistor Color Calculator app have ads?
No, the Resistor Color Calculator app is completely free and does not contain any advertisements.
What devices is the Resistor Color Calculator app compatible with?
The Resistor Color Calculator app is available for iPhone and iPod devices.
How often is the Resistor Color Calculator app updated?
The Resistor Color Calculator app was last updated on December 20, 2016, with version 1.1.
What is the age rating for the Resistor Color Calculator app?
The Resistor Color Calculator app has an age rating of 4+, making it suitable for a wide range of users.
Can I calculate resistor values other than 4-band with this app?
The current version of the Resistor Color Calculator app is designed specifically for standard 4-band resistors.
Is the Resistor Color Calculator app free to download?
Yes, the Resistor Color Calculator app is available for free download on supported devices.
