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Electronics Engineering ToolKit Pro 9 for iPhone

By Thomas Gruber

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

Users tell me it is the BEST and MOST PRACTICAL EE ToolKit App in the iTunes App Store.

I am 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!


“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 100 electronic applications
Ω amazingly great multi-functional keyboard
Ω color code picker tools
Ω now with a brand-new Audio Scope and a frequency pitch detector
Ω new 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 in Version 9.0.2

The brand-new EE ToolKit Pro 9 for iPhone is here! Yet again I have spared no efforts and implemented a great amount of new features and this time also settings. You can now configure between the American style or the European IEC resistor symbol type. You can even set V or U as your preferred voltage character. And this works for all the schematic drawings and the formulas all over the App!

In order to make that happen I had to re-design all the graphics and at the same time, of course, I improved them as well. I really hope you like the new look as much as I do.

I am also introducing a brand new Favorites page! Each tool or calculator can now be selected as Favorite and it will show up in the Favorite page. This provides a new and very quick access to your most favorite tools. The order of the Favorites can be rearranged, if required.

A Lot of new tools have been added and the existing ones have been improved. One of the new tools that clearly stands out is the new resistor circuit recommender. So, imagine you need a 1% resistor value but you have only E6 or E12 values available. Let's say you need 35.7Ω and you need it now. No time to order it. So, ... just ask the tool! No manual calculation required!

The LED Tools have been completely re-designed. There is now a picker, which lets you pick the typical forward voltage for different LED type colors. Three more tools have been added. One of them is an application example with the TI TPS61165 where you can control the brightness of a LED display backlight with a PWM. This is both great for understanding PWM in general and for trying it in a real application like in this backlight control.

Ω Support for iOS 9
Ω Optimized and improved all graphics and formulas (especially for the iPhone 6/6S Plus)
Ω Added the resistor circuit recommender
Ω American style / IEC style resistor symbol switch
Ω Added all new Favorites page
Ω Added Iref to the dB Converter Tool
Ω Improvements to the Wire Ampacity tool (adding also AWG as input field)
Ω Accuracy fixes to the Resistor Color Code tools for values < 1 Ohm
Ω The linear regulator tool now takes the R2*Iadj term into consideration
Ω Updates to the connector page
Ω New LED tools:
- LED with constant current source
- Display LED backlight control via PWM
- Visible Light Spectrum browsing
Ω Frequency Generator specific:
- added the BPM feature (pulsed audio out) to the frequency generator. You can now pulse the generated audio within a range is 1 - 600 BPM!
- A new Phase-Out setting is now available. Configure the phase out (phase shift of 180 degrees) for each channel individually. Note that once phase out is activated for a channel, the setting is also visible on the main frequency generator and the sweep page (red text). Phase Out is not available on the Noise page!

Please don't forget to also rate this new version of the EE ToolKit PRO. This is very important for me. Thank you so much!

iPhone Screenshot

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Customer Reviews

Sweet Update!

I got this app when it first came out. It was a basic electronics tool. Of course, basic is a relative term because nobody else had thought to create one. The way you have supported, improved any upgraded it over the years is enough to restore my faith in humanity. I mean that sincerely. With everything from politics to terrorism to in app purchase, the future seemed dark, but you are the light of hope at the end of the tunnel! You, my friend, deserve a Nobel peace prize. Know that your efforts are truly appreciated!

I do have one suggestion. In the LED Visible Spectrum section make the frequency counter color at the top of the page match the selected frequency.


This will take me a while to evaluate completely, for its not something I will need to use all the time. But I am very satisfied with my preliminary tests. I'm confident it will be an extremely useful tool in the field, which is why I purchased the iPhone specific version. I don't think I will ever use this on an iPad. I am looking forward to future updates.

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.

Electronics Engineering ToolKit Pro 9 for iPhone
View In iTunes
  • $4.99
  • Category: Productivity
  • Updated:
  • Version: 9.0.2
  • Size: 128 MB
  • Languages: English, German
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

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