# EE ToolKit PRO for iPad — user reviews > 73 indexed App Store user reviews of EE ToolKit PRO for iPad by Thomas Gruber, rated 4.80/5 from 79 ratings. - Source: https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367/reviews - App overview in markdown: https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367.md - Rating breakdown: 5★ 70 · 4★ 5 · 3★ 2 · 2★ 1 · 1★ 1 ## Newest reviews (16 of 73) ### 5/5 — Super Useful *2019-01-27, version 9.1.1* This is a very handy desktop reference for electrical/electronic design and development. There are many calculators, reference values, equations, and tutorials (I just used the Passive Cooling page, great! This is useful for the professional, student, and hobbyists. ### 5/5 — Nice collection of tools. *2018-09-04, version 9.0.0* I really should use this more often! It’s a very nicely stocked collection of handy tools for the electronics engineer. Great layout and no fuss. ### 5/5 — Used Daily in my Amplifier Design *2018-07-13, version 8.1.0* If you need to know on the fly, you need this toolkit. It's a dense and excellent set. This isn't a toy. It's a professional must have. If you are a component series geek, this is your virtual assistant.. Thomas, add voice to this so I'll have a friend! :) Thank you. ### 5/5 — Buy this App - Been using it for 2 years *2017-07-31, version 8.0.2* I use this for work on Audio systems, frequency response, tone generation, filter analysis, RF measurements along with my HP RF Service monitor, antenna analyzer, etc. I originally got the free version within-app ability to unlock features. That worked fine until I got a new iPad, same account etc. I just purchased this Pro version, it doesn't require restoring options. For the price, and features, this is a "Must Have" program for those who use or are interested in Audio and RF analysis and design. Strongly recommend this APP !! ### 5/5 — A very useful set of reference tools *2016-11-13, version 7.2.1* Overall, this is a very useful set of EE references and utilities. The only suggested improvement I find is with the resistor divider tool, where it would be nice to set Vin and desired Vout and have it recommend possible resistor values to get closest to the goal. ### 5/5 — Immensely useful *2016-10-03, version 7.2.1* This is a must have app for general reference in the lab or shop. It's literally all at your fingertips. I cant recommend this highly enough. ### 5/5 — great *2016-08-24, version 7.2.1* good job !!! thank you ### 5/5 — What's the diff between the Red Pro and the Green Pro?? *2016-07-29, version 7.2.1* The toolkit seems like a good reference. I have an iPad and an iPhone. I bought a version specifically for my iPad and can't tell what's the difference between the in-app-purchased Red Pro and purchased Green Pro that's supposedly specifically designed for an iPad?! ### 5/5 — Unbelievably useful *2016-07-07, version 7.2.1* There is so much really useful stuff in this app, all in one place AND it just keeps getting better and better. I like the tool and think it is perfect and then a new update arrives and it's like "oh... of course it should have this function, just wonder why I didn't realise it before". ### 5/5 — AV guys check this out *2016-07-07, version 7.2.1* This is a valuable tool for work, and handy for projects at home as well... Good stuff for AV techs. ### 5/5 — Excellent app *2016-07-07, version 7.2.1* Very comprehensive electronic / electrical reference tool, didn't think it could be better then a update comes along and makes it even more useful. Credit to the developer... ### 5/5 — Hobby *2016-07-06, version 7.2.1* I enjoy working with electronics as a hobby and have found this app one of the best.. ### 5/5 — Invaluable *2016-04-08, version 7.0.2* This app was good before, but now even better. If you work with electronics than you need this app. ### 5/5 — Buying it again, sight unseen... *2016-01-26, version 7.0.2* I had an older version, lost after a "master reset" and I do not have any qualms about shelling out some more money for this very practical and well maintened product. ### 5/5 — Very handy bit of kit *2015-12-25, version 7.0.2* Fantastic app Very useful and easy to navigate. ### 5/5 — Superior in all the best ways *2015-12-13, version 7.0.2* Wow! This was my Go-To app before, and now it is better on all levels. Huge work done, and is clear, easy to navigate, and heaps of functions. Plus looks great! Thanks for the upgrade!!!! ## Most critical reviews (10 lowest-rated) ### 1/5 — Ee toolkit and eetoolkit Pro on iPad *2019-05-01, version 9.2.0* No option to go back to menu page to change selection? Once I select resistors for example I am not able to go back and select capacitors or any other option. Only way to break out to start page is power cycle the iPad? This problem is obviously some sort of screwup and needs to be fixed! ### 1/5 — Waste money! *2017-12-09, version 8.1.0* Very basic! Get another app ### 1/5 — Don't buy doesn't work *2011-01-29, version 1.4* Terrible app one major flaw is when adjusting a capacitor it affects the Inductor circuit calculation. Whatever happened to the days when you could buy something and it would actually work. ### 1/5 — Several errors *2010-11-14, version 0* Nice idea, but should have been checked before release as there several basic errors. The PD resistors are transposed, as are the resistors for the adjustable regulator "calculator". The resistor/ inductor impedance calculator does not work, adjusting L has no effect on impedance! ### 2/5 — BJT ICON FOR 2N3904 DOESN’T EXIST IN APP!!! *2021-12-26, version 12.5.1* THE PICTURE FOR THE BJT TRANSISTORS SHOWS A 2N3904 HOWEVER THAT COMPONENT IS MISSING, AS DOES MOST OF THE LOW NOISE GENERAL PURPOSE PARTS… WHY BOTHER SHOWING A TRANSISTOR AS THE VISUAL DESCRIPTION OF A TOOL IF YOU ARE NOT GOING TO INCLUDE IT… PRETTY BUMMED SINCE MOST THE ELECTRICAL DESIGN I DO IS FOR AUDIO AND YOUR MISSING SOME KEY COMPONENTS. BOO! **Developer response:** Hello! There are several 3904 types in the BJT Transistor section which have similar characteristics as the 2N3904, but indeed - all of them are SMD types - not THT. I will add the 2N3904 in the next release of the App. Best, -tom ### 2/5 — Exactly the same as Electronic Toolbox Pro universal *2021-12-08, version 12.5.0* I paid for this app because I already had Electronic Toolbox Pro universal on my iPhone and iPad, and it is so useful. I would give it five stars. I thought an app for the iPad would be different, and optimized for the iPad, but it is exactly the same. I asked the developer if there were any differences, but a week has passed and I have received no response. I don’t mind paying for useful apps, but resent having to pay for one, just to find that it is exactly the same as one I already paid for and not get an answer from the developer. There is one difference. The color of the icon is green instead of red. ### 2/5 — Really cool app *2013-05-05, version 3.2.5* This app is really cool.I'm not gonna pretend like I knew everything about it.But I honestly liked it especially the different USB hubs and ports.It taught me things I wanted to know.Great buy. ### 2/5 — Really nice idea but needs work. *2010-10-09, version 0* I love the idea of having a calculator like this for day-to-day quick circuit calcs. However, I think the UI needs some tweaks in future updates. I would type a number in and the app would change the value and or the units when I highlighted another field. Very frustrating. Hopefully future updates will improve the UI and make this the very useful tool it could be. ### 3/5 — Good resource, weak design *2013-02-28, version 3.2.5* A real good resource for all tinkerer. The design however needs a lot of work. Useful but not pretty ### 3/5 — Not as the iPhone version but ok *2012-06-27, version 2.2.1* I trust in you ## Most praised reviews (10 highest-rated) ### 5/5 — Extremely useful *2025-10-05, version 14.1.0* I wish I had this many years ago when I was studying electronics engineering, it would have saved me tons of hours! Now that I am a hobbyist I use it all the time for my DIY projects….keep up bringing new features! ### 5/5 — This app is so good. Invaluable resource for diy-ers *2022-03-09, version 12.5.2* This app gets better every year. Everything is in one place. Very logical. Incredible reference for electrical engineers or DIYers. Extremely good value as well. ### 5/5 — Invaluable *2021-12-31, version 12.5.1* The amount of information available in this app is astonishing. Concepts are explained in a way that is easy to understand in a pinch. Saved me lots of time and frustration filling in those learning gaps. Thank you! ### 5/5 — Excellent quick reference tools! *2020-02-13, version 10.0.0* This is slightly different than I thought it was going to be. I’m a retired radio tech, who recently discovered “Mr. Carlson’s Lab” on youtube/Patreon. It’s fun to dust off the knowledge, although I won’t be teching...just a fan now. One of the first things I did was to go the rectifier section and go to full-wave bridge. I used the first values, and got a real surprise that the load resistor would have fried like bacon! So manipulating its value by an order of magnitude brought a satisfying result. Very handy for pinout references, etc. Actually better than I expected. ### 5/5 — So farlooks good and worth the price to have so many functions in one app without ads! *2020-02-04, version 10.0.0* One thing you could add is wiring for a On On On switch. These are common in both guitar and amplifier design, especially where off might have negative effects! Otherwise, this looks like a very useful app! ### 5/5 — Look no further! *2020-01-23, version 10.0.0* I bought it years ago. I don’t use it every day but when I need it’s just here. It has all I would ever need as a hobbyist. It’s a solid reference tool. The author updates it and not asks for money. I hate subscriptions for apps I rarely or sporadically use. Respect to the author for not going this route. So look no further - just get it and enjoy. Well deserved 🎖🎖🎖🎖🎖 ### 5/5 — Wish I had this 40 years ago *2019-10-07, version 10.0.0* Dating myself, I got into aerospace engineering at the same time the HP45 hit the scene. Goodbye slide rule (I still have two in a desk drawer). As great as a scientific calculator was, this app would also have greatly enhanced my work w-a-y back then. I am mostly on to other things in my last life, but still frequently find myself needing electronics info. I bought this several years ago, before I had an iPad, not noticing one as necessary. NOW, I have an iPad, which I use for remote controlling digital audio consoles (among other things), so can finally make use of this app. I see that it is missing pin-outs for USB-C connectors, but expect that to be rectified soon. Keep up the good work. ### 5/5 — Best app for 8 years *2019-05-18, version 9.2.1* I bought his app over 8 years ago and use it almost daily. Tons of great info and continual updates. ### 5/5 — Awesome. Just awesome. *2019-05-11, version 9.2.1* So much to dig into in this app, and it keeps getting better with every release. Must have for makers and engineers alike. ### 5/5 — Really great! *2019-04-13, version 9.1.1* This app is well made and fun to use. Great tool! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-06.*