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 12.4.0

Ω New Tools:
• BCD to 7-Segment using 74HC4511 (LED Tools)
• LED dot/bar application using LM3914 (LED Tools)
• Bit to dB tool for converting Bit depth to Decibels (Decibel Tools)

Ω Function Generator:
• new Fine-tune popover for fine-tuning frequency and amplitude
• new system volume popover
• fixed memory leak in the Sweep repeat implementation
• repeat button in the Sweep tab now has 3 functions: off, repeat, siren-mode
• refactored Master Volume control
• added fine-tuning option to the musical notes section

Ω Tools which use ICs in the example schematic have a link to the PDF datasheet of that respective IC now accessible via a sidebar link
Ω Corrected swapped Vin and RL description in the loaded voltage divider tool
Ω Fixed a bug in the Diodes tool
Ω Corrected formula for the PCB Trace Width tools
Ω Smaller fixes and improvements all over the App

Ratings and Reviews

4.7 out of 5
776 Ratings

776 Ratings

S-F-R ,

Genuinely Useful

This is a well thought out and genuinely useful piece of software that ends up saving me hours on every project. It is worth the extra money for the pro version, as you will see if you try the free version. The documentation portal aspect alone is a helpful tool (how many times have you had to search for your GPIO wiring diagrams because you forgot which pin is 5V and which is 3.3V) and add on top all the remaining aspects and it’s well worth it.

EbbFlow44 ,

A couple things before I hand over $7.99

This looks like it has potential, but I see a few issues. 1) On an iPhone XS screen, the brown resistor band appears as dark red. I deal with color every day, and my phone display is fine. Perhaps find a more neutral brown color to use. 2) Browsing through the free features, I managed to activate a musical note in the function generator that sent my speaker into a high pitch. I could not stop it. Muting the volume did not work, and I had to press the power button. Hope to see more, as I’m just starting into electronics.

skyhighnemo ,

Easy to use..

Whether your a student or an EE, this simple program delivers quick and easy calculation. Basically, it is a time saver. It is good to find such an app for a change that delivers upon its promise. For $7.99 upgrade it is well worth the expense. No more sitting down drawing out and using a calculator, loading up a major EDA program to do simple calculations, this program fit comfortable in the center of those two extremes.

App Privacy

The developer, Thomas Gruber, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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