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

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

4.5 out of 5
11 Ratings

11 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 !


App store pics not accurate

Its not obvious how to get to functions other than resister color codes when in portrait mode. Pics show a menu. There is none. There is a slide out tray from the left.

Once I figured that out all is good.

Worthwhile tool.


Adam Hartley
2.4 MB

Requires iOS 10.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch), iPad Pro (12.9-inch) Wi‑Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular,and iPod touch. Apple TV.



Age Rating
Rated 4+
© 2013-2016 LogicLevels


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