This is the brand-new Electronics Engineering ToolKit! The HIGHLY RATED and RECOMMENDED productivity app.

Users say it is the BEST and MOST PRACTICAL Electronics App in the whole App Store.

From an electronics enthusiast with a master's degree in Electronics Engineering. This App is for engineers, students and hobbyists and anyone interested in Electronics Engineering.

The App gets CONSTANT and POWERFUL improvements!

!!! This is a UNIVERSAL App - for iPhone and iPad !!! With In-App upgrade to PRO. If you don't like In-App purchases, you can also download the PRO version (red icon with PRO text) which is full PRO from the beginning without any In-App purchase.


“Awesome app, constant and powerful improvements”
This app was worth every penny I paid for it back when I bought it years ago. Since then, I’ve regularly used it at work and found it to be an excellent, quick tool to use. The most impressive aspect of this app are the constant and VERY impressive updates! Massive feature additions and very easy to use interface! The list of capabilities this app has makes it an amazing value for truly anyone involved in electronics.

“Latest version makes this an exceptional tool”
The EE Toolkit was always a very useful tool, but with the additions in the latest version it is truly an exceptional tool. The author is extremely diligent in managing bugs and improving the tool.

“A superb app highly recommended”
Fantastic application. Very useful. Always updated. Good developer. Lots of great bonus tools. Just love it.

"Incredible useful, worth the money"
I have had this app for a while now. Originally as an Electrical Engineering student I didnt really use it but once I was out in the field it became my bible. I definitely recommend to any engineering students/professionals alike. I also recommend buying the Pro version because it is definitely worth it.

Ω more than 160 electronic applications
Ω amazingly great multi-functional keyboard
Ω huge selection of color code tools and SMD code tools
Ω audio scope and a frequency pitch detector
Ω favorites page only for the tools that you have marked as favorite
Ω full-featured frequency generator
Ω extra large component reference section (incl. 7400 Series, PIC family, etc.) with the option to open pdf datasheets live or by e.g. iBooks
Ω 555 Timer Tools with the most important application examples
Ω extensive collection of Single Board Computers (more than 120 different boards!!!)
Ω PCB trace impedance tools for several different structures
Ω simple and quick unit conversion within the single calculators
Ω fast on-the-fly conversions and calculations
Ω real-time circuit simulations of the example circuits
Ω support for preferred E series, sliders and min/max calculations
Ω auto-save of all entries over several sessions
Ω file manager to save and load individual calculations
Ω built-in access to your iCloud
Ω formula search tool with quick links to the tool which uses the formula
Ω and many many more

What’s New

Version 10.0.0

The brand-new EE ToolKit is here! I am very happy to present yet again a very big update with 20 great new tools, great improvements and feature additions. Here is the summary:

Ω New Tools:
• Active Filters: six new active filter tools including both inverting and non-inverting Low-Pass, High-Pass and Band-Pass filters with Operational Amplifiers.
• Switches: everything about SPST, SPDT, DPDT, Special Switches and more. Including also new tools for multiway switching and latching switching.
• Rectifiers: new tools for calculating half wave and full wave rectifier circuits. This includes circuits with a single diode and bridge rectifiers.
• LED Tool extensions: new tools in the LED section including Infrared light barrier, touch sensors (resistive and capacitive), LED water level sensors, light sensor and dark sensor.

Ω Update for iOS 13
Ω From iOS 13.0 onwards, the background appearance will be auto-detected at the first time start (Light or Dark appearance)
Ω Audio Function Generator: some parts of the generator are now accessible also from the free version
Ω Added Raspberry Pi 4
Ω Added USB SuperSpeed plugs and receptacles with pinout
Ω Fix saving jpg images in the SBC tools
Ω Fix DC/DC Regulator (Boost) tool opens wrong datasheet
Ω smaller fixes and improvements all over the App.

Thank you very much for using the EE ToolKit! If you have a moment, please leave a review in the App Store. By doing that, you are really helping a lot so the App can be further developed and improved. Thank you so much! - tom

Ratings and Reviews

4.8 out of 5
70 Ratings

70 Ratings

Chaotic_illuminator ,

Awesome work!

This does way more than I need (but hey... who knows what I might fiddle with in the future?)

So easy to use, so nicely presented and insanely thorough!

Just deleted 4 other apps I don’t need any more...

Jfg317 ,


Absolutely brilliant.
I would like to see a bit about motor (eg squirrel-cage) and generator/alternator theory but they are big subjects no doubt.
Many thanks anyway for a very handy program.

mark.lloyd69 ,


This app is useful and worth having if like me, you are not an electronics expert but are interested and work with components


Thomas Gruber
387.5 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.


English, German

Age Rating
In-App Purchases
  1. Complete EE ToolKit Pro Upgrade £7.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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