Archived App (Last seen on 13 May 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.
About
An essential tool for every electronics enthusiast and electrical engineer. Our Resistor Color Code Calculator lets you quickly determine resistance and tolerance values from color bands. You can also do a reverse lookup to find the color code for a specific resistance value. Supports both 4-band and 5-band resistors!
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What's New in Resistor Pro
1.0
September 16, 2025
