This is the brand-new Electronics Engineering ToolKit PRO! The HIGHLY RATED and RECOMMENDED Electronics productivity App. A universal App for both iPhone and iPad.

Users say it is the BEST and MOST PRACTICAL EE ToolKit PRO App in the whole iTunes 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 !!! 100% 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.

Ω more than 150 electronic applications
Ω amazingly great multi-functional keyboard
Ω color code picker tools
Ω audio scope and a frequency pitch detector
Ω favorites page
Ω of course with a 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 simple and quick unit conversion within the single calculators
Ω fast on-the-fly conversions and calculations
Ω real-time circuit simulations
Ω support for preferred E series, sliders and min/max calculations
Ω auto-save of all entries over several sessions
Ω and many many more

What's New

Version 11.0.0


The brand-new EE ToolKit is here! Yet again the update is a very big one and I am proud to announce lots of new tools, improvements and feature additions to you! I have put a lot of hard work into this update and I really hope you will like it as much as I do!

Ω new tool for Single Board Computers which provides a very nicely structured navigation through the majority of currently available boards (in total 114 different boards!!!). Including pinout descriptions, getting started, schematics, documentation, manuals, code examples, etc.
Boards included:
- Beagleboard (10 Boards)
- Raspberry Pi (13 Boards)
- Arduino (23 Boards)
- Orange Pi (20 Boards)
- Banana Pi (16 Boards)
- Nano Pi (18 Boards)
- Cubieboard (10 Boards)
- ODROID (4 Boards)

Ω major 7400 database additions and update. Added almost 200 new datasheets for the LV, LVC, HCT and HC series, bringing this database up to date with the latest changes and additions.

Ω components section: verified all datasheet links and fixed those that were not working anymore. Now all links to datasheets must be working – if not, please let me know.

Ω added extended search function to all component reference tools. Watch out for the magnifying glass icon in the sidebar menu.

Ω added zoom function for all the images and formulas that are shown in the Info Views. Just tap on the image and zoom in.

Ω extended the Voltage Divider Calculator. This tool now consists of two different tools: a default and an extended version. The new extended version of this tool requires three values and from these three, it calculates the missing fourth. Any combination is allowed. Please make sure that you don't enter invalid values, like Vout being higher than Vin, which should never be the case (the tool shows invalid input combinations, nevertheless).

Ω global asset optimizations, storage management. Now the App provides even more content but needs much less space on your device.

Ω added check for newer version available on the App store.

Ω fix for not updating keyboard on BIN DEC HEX OCT tool.

Ω fix for conversion issue on the Trace Resistance tool.

Ω the FET tool is now available in the Transistor section.

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
16 Ratings
16 Ratings



As a fairly novice ham radio operator and electronics tinkerer, this app has been absolutely indispensable to me. It has been a great learning tool.

If you are wondering if maybe it is too advanced for you, I thought the same. There are still many functions that I don’t understand (yet). But, as I progress with my understanding of electronics more and more of the functions become useful.

The Function generator alone is worth the money. I use it all the time to generate Lissajous patterns on my oscilloscope. Also useful for testing cross overs on speakers.

The resistor color band calculator is excellent as are the series and parallel component calcs.

Looking forward to future updates, and to gaining a better understanding of the other functions.

Great application for EE use


I use this app to assist me with homework and it doesn't disappoint. Instead of referencing all over the Internet, I am able to do quick searches and find the values I need. I would recommend this app to friends and colleagues.

Excellent !

Krug j.

I am very satisfied with this very easy to use reference app. I have found it be an extremely useful tool in the field, which is why I purchased the Pro version.
Wonderful update. Thanks.


Thomas Gruber
172.7 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, German
Age Rating
Rated 4+
© Thomas Gruber


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