About this app
▶ Decode any resistor in seconds. Tap the color bands on a big, clear resistor graphic and the value, tolerance and temperature coefficient update live — 4, 5 or 6 bands, with the nearest E24 or E96 standard shown too. ▶ Go the other way. Type a value like 4.7k and the app snaps it to the nearest standard part and paints the color bands back onto the resistor, with the error against your input. ▶ Everyday electronics math in one place. Ohm's law solves V, I, R or P from any two; the LED resistor tool sizes a series resistor from supply voltage, LED forward voltage and current. ▶ Read SMD codes fast. Enter a 3-digit, 4-digit, R-notation or EIA-96 code and get the value, plus series and parallel resistance helpers for quick combinations. ▶ Works fully offline with a clean history of your calculations. Share a result, switch languages, no account needed. Color names and values follow the standard IEC bands; always double-check critical parts against the printed markings and a meter. This is a reference and learning tool, not a substitute for measuring your actual components.
Latest release
What’s New
Alerts now arrive properly on Android instead of landing silently, and the app no longer interrupts you in the middle of what you came to do.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 24, 2026 · 1:39 AM Free
Screenshots
