Electronics is a powerful all-in-one toolkit for engineers, hobbyists and anyone interested in electronics. Supports Apple Watch!

Now you can calculate 4 band resistors, inductors and view chip pin outs right on your wrist. More to come soon!

The simple and easy to use interface ensures you get the information you need quickly and efficiently.

Electronics key features:

• Resistor colour code calculator
• SMD resistor code calculator
• Ohms law calculator
• LED current limiting resistor calculator
• Axial inductor color code calculator
• Reactance and resonance calculator
• Potential / Voltage divider
• Capacitor charge & energy calculator
• Wheatstone bridge calculator
• Pin-out reference for common 4000 series CMOS and 7400 series chips

What’s New

Version 3.0

This app has been updated by Apple to display the Apple Watch app icon.

A wild update appeared! This update is mainly a service update to provide a few fixes to minor issues and support for newer devices.

- Fixes common most common causes for crash on startup
- Fully supports iPhone X and 12.9" iPad Pro
- Fixes incorrect band shown sometimes on the resistor calculator
- Other miscellaneous fixes

- Requires iOS 10 or above (No longer supports 32-bit devices)
- Apple Watch app deprecated due to breaking changes in watchOS

Ratings and Reviews

4.6 out of 5
14 Ratings

14 Ratings

MrBlanston ,

Very Handy Reference

Although I'm not going to use this every day, it's fantastic reference to have if you do work with electronics; A+.

Note I can't possibly imagine how this could get voted anything less than 3 stars, so obviously those that rated this only 1 star are either just totally oblivious or stupid.

ambush_boy ,

I’m just an average guy so this helps

I’m your basic diyer, slowly learning about electronics circuitry and basic design for dumb personal projects. This is a heaven sent for someone like me who has adhd and is still learning new concepts and ideas of basic electronics. Thank you !

JohnWickham ,


Seriously a terrific app! Really clean interface, useful utilities, and awesome on Apple Watch!

App Privacy

The developer, Adam Hartley, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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