Point your phone's camera at a resistor to instantly identify its value. Currently supports 4-band carbon film resistors with a 5% tolerance.
Resistor AI Calculator by Daichi Takigawa
Editor's Choice
🔧 Utilities
3.6(5 ratings)
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Best apps like Timer 555 Calculator
10+ similar apps compared and reviewed
4.0 avg rating
10 free apps
Updated August 2026
Timer 555 Calculator is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
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555 Calc by Jibiki Works
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This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.
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