# EE ToolKit PRO for iPad — Electronics Engineering > Electronics engineering toolkit with over 160 applications and reference tools for professionals and students. (iPhone/iPad app by Thomas Gruber.) - Source: https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367 (this page in markdown: same URL + `.md`) - Developer: [Thomas Gruber](https://appshunter.io/developer/342699861) - Category: Productivity, Education - Price: $8.99 - Rating: 4.80/5 from 79 App Store ratings · 73 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 289 MB - Languages: American English, German (Germany) - Released: 2010-10-08 - Data updated: 2026-07-06 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367/reviews.md ## What is EE ToolKit PRO for iPad? This is the brand-new Electronics Engineering ToolKit for iPad! The HIGHLY RATED and RECOMMENDED productivity app. Users say it is the BEST and MOST PRACTICAL Electronics 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! !!! Please Note: this is the EE ToolKit PRO for iPad Only !!! If you are interested in the Universal-App for iPhone and iPad, please look for the EE ToolKit App with the red icon. The EE ToolKit PRO is the preferred Electronics App at schools and universities. It is available through the Volume Purchase Program with a discount for educational institutions. Many students, teachers and professors have downloaded the App and are using it during their studies and career. WHAT OTHER USERS ARE SAYING: “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. FEATURES OF THE EE TOOLKIT: 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 ## Key features - Over 160 electronic applications - Multi-functional keyboard - Color code and SMD code tools - Audio scope and frequency detector - Component reference section with datasheets - 555 Timer tools - PCB trace impedance calculators ## Recent user reviews (10 of 73) All indexed reviews: https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367/reviews.md ### 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! ### 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. ### 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. ## Frequently asked questions about EE ToolKit PRO for iPad ### What does the EE ToolKit PRO for iPad do? The EE ToolKit PRO for iPad is a comprehensive productivity app offering over 160 electronic applications, calculators, and reference tools. It's designed to assist electronics engineers, students, and hobbyists with various tasks, from calculations and simulations to component lookups and code decoding. ### What are the key features of this app? Key features include a vast selection of over 160 electronic applications, a multi-functional keyboard, extensive color code and SMD code tools, an audio scope, a frequency pitch detector, a full-featured frequency generator, a large component reference section with datasheet integration, 555 Timer tools, and PCB trace impedance calculators. ### How much does EE ToolKit PRO for iPad cost? Based on the provided information, this app is a paid application. Users have indicated it was 'worth every penny' and 'worth the money', suggesting a one-time purchase cost. ### Is this app compatible with my device? This specific application, EE ToolKit PRO, is exclusively for the iPad. If you are looking for a universal app for both iPhone and iPad, you should search for the 'EE ToolKit App' which has a red icon. ### Who would benefit most from using this app? Electronics engineers, students pursuing degrees in electronics or electrical engineering, and electronics hobbyists would find this app incredibly useful. It serves as a practical tool for daily work, studies, and personal projects, offering quick access to essential engineering resources. ## Version history (last 5 releases) ### 15.1.0 — 2026-03-07 Ω Smaller fixes and optimisations ### 15.0.0 — 2025-11-11 Ω Fresh look, improved user interface! • This last update brings a complete view navigation redesign with modernized view handling, fully optimized for iOS 26. Ω Audio Function Generator • new Balance control! Easily adjust the left/right stereo output for precise sound shaping. • Several improvements to musical notes playback Ω smaller fixes and improvements ### 14.1.0 — 2025-09-20 Ω updates for iOS 26 Ω Audio Function Generator • new Balance control! Easily adjust the left/right stereo output for precise sound shaping. • Several improvements to musical notes playback Ω smaller fixes and improvements ### 14.0.0 — 2025-04-19 Ω New Zoom Feature • added zooming support globally for all schematics, images, and formulas. • Now you can easily enlarge and examine details more closely. • Enjoy improved visibility and a more flexible experience. Ω New interactive graphs with cursor: • Low-pass, high-pass filter (Cut-Off frequency tool) • Charging and discharging of a capacitor Ω New Tools (Capacitor Charge Tools) • Inrush Current Limiter using NTC including interactive graph and cursor • Capacitor Quiescent Current calculator including interactive graph and cursor Ω New custom database for datasheets • easily manage your project datasheets with the new custom database feature! • access and store important project information directly from the new menu entry of the sidebar • keep everything organized and readily available whenever you need it Got questions or suggestions? Reach out to us at tom@ee-toolkit.com. If you're enjoying the app, please take a moment to leave a review — it makes a big difference! ### 13.7.0 — 2025-02-27 Ω IC Logic Guide (Logic Gates Tool): overview of the most common process technologies / device families Ω Additions to the SBC Tools section Ω User Interface optimisations and improvements Ω Smaller fixes and improvements all over the App ## Apps similar to EE ToolKit PRO for iPad | App | Rating | Price | Category | | --- | --- | --- | --- | | [Engineering FMEA](https://appshunter.io/ios/app/engineering-fmea/id1036718443) | — | $4.99 | Productivity | | [Rlytic R Programming Editor](https://appshunter.io/ios/app/rlytic-r-programming-editor/id6739818770) | 5.0 (5) | Free | Productivity | | [iCircuit](https://appshunter.io/ios/app/icircuit/id383359044) | 3.8 (131) | $12.99 | Productivity | | [Graph](https://appshunter.io/ios/app/graph/id381953671) | 2.9 (15) | Free | Productivity | | [Pialytic Julia Editor](https://appshunter.io/ios/app/pialytic-julia-editor/id6741685816) | 4.8 (6) | Free | Productivity | | [eModulex](https://appshunter.io/ios/app/emodulex/id6443797534) | 5.0 (2) | Free | Productivity | ## More apps by Thomas Gruber - [EE ToolKit PRO](https://appshunter.io/ios/app/ee-toolkit-pro/id368780426) - [EE ToolKit](https://appshunter.io/ios/app/ee-toolkit/id391792609) - [Audio Function Generator](https://appshunter.io/ios/app/audio-function-generator/id768229610) - [Audio Function Generator PRO](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703) - [Resistor ToolKit, Color Codes](https://appshunter.io/ios/app/resistor-toolkit-color-codes/id1058581945) All apps by Thomas Gruber: https://appshunter.io/developer/342699861 --- *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.*