# EE ToolKit — Electronics Engineering > Electronics engineering toolkit with over 160 applications, calculators, and reference tools. (iPhone/iPad app by Thomas Gruber.) - Source: https://appshunter.io/ios/app/ee-toolkit/id391792609 (this page in markdown: same URL + `.md`) - Developer: [Thomas Gruber](https://appshunter.io/developer/342699861) - Category: Education, Utilities - Price: Free with in-app purchases - Rating: 4.70/5 from 1,397 App Store ratings · 327 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 289 MB - Languages: German (Germany), American English - Released: 2010-09-22 - Data updated: 2026-08-20 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/ee-toolkit/id391792609/reviews.md ## What is EE ToolKit? 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. 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 pitch detector - Frequency generator - Component reference section with datasheet access - Real-time circuit simulations ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Complete EE ToolKit Pro Upgrade | $12.99 | one-time | ## What do users think of EE ToolKit? Overall sentiment: positive **Pros** - 👍 Useful tools and features - 🚀 Comprehensive and informative - 👍 Intuitive and easy to use - 👍 Helpful for both beginners and professionals - 👍 Regularly updated with improvements **Cons** - 🔒 Many features locked behind paywall - 🐛 Some bugs and glitches reported - 🔍 Limited free version functionality - 📱 Accessibility issues for visually impaired users **Commonly reported bugs** - Locked features not unlocking properly - Certain tools and calculators not functioning as expected **Most requested features** - Add circuit simulation capabilities - Include more microcontroller and automotive-related content - Improve zooming and readability on certain screens - Implement Kirchhoff's laws and node analysis tools ## Recent user reviews (10 of 327) All indexed reviews: https://appshunter.io/ios/app/ee-toolkit/id391792609/reviews.md ### 1/5 — I would like a refund *2026-02-09, version 15.0.0* Nothing on here that I can’t get online. Would rather look up the exact part rather than dig around on this app for something that isn’t there. ### 5/5 — Meatohead *2026-01-06, version 15.0.0* What an amazing app EE Toolkit excellent well done ### 4/5 — Language support *2025-12-24, version 15.0.0* This app is good but it doesn't support multi language. I’d like to order the pro version if it supports Chinese language. ### 5/5 — Chip Sicherungen (SMD) *2025-12-14* Wäre schön wenn man im der App noch Chip Sicherungen mit den Code Bezeichnungen z. B. Typ E = 375mA und die Baugrössen in Millimeter mit aufnehmen könnte. ### 5/5 — Engineer *2025-09-09, version 14.0.0* Like the layout of the app. Not many apps follow the users own preferences and content as if they developed it. Can I make one request that would almost complete toolkit? Add a toolkit for busbars. DC and AC, copper primarily but also other materials like aluminum. This may be a personal preference but I think other Engineers using this app may find it useful as a quick estimate. Be sure to include compensation for temperature, power loss, dissipation, airflow if forced air is used, as in an enclosed environment TPM. ### 5/5 — Parfait ! *2025-09-04* Il manque un tableau de conversion pour les farad par exemple, il manquerait aussi la version française de l’application :) Mais déjà merci ! J’ai pris la version payante et c’est chouette ! Ça aide énormément. ### 5/5 — Keep the updates coming *2025-09-02, version 14.0.0* I used this app for an opamps class. It was useful. Please keep the formulas and stuff coming. It didn’t cover everything. Also, thank you for not collecting and selling our data. ### 5/5 — The old Russian lady *2025-08-03, version 14.0.0* Adobe fresh American would love something like this. ### 5/5 — Great app *2025-04-20, version 14.0.0* A well supported app that I used for many years. ### 5/5 — Bestens *2025-04-19* Leute, mal ehrlich. Da hat sich einer wirklich viel Arbeit gemacht, alles für umsonst, und dann funktioniert das auch noch so wie es soll. Großen Dank ## Frequently asked questions about EE ToolKit ### What does the EE ToolKit app do? The EE ToolKit app provides a comprehensive suite of over 160 electronic applications, calculators, and reference tools. It is designed to assist electronics engineers, students, and hobbyists with various tasks, including calculations, simulations, and accessing component information. ### What are the key features of the EE ToolKit? Key features include a vast collection of electronic applications, a multi-functional keyboard, extensive color code and SMD code tools, an audio scope, a frequency generator, a large component reference section with datasheet access, and real-time circuit simulations. It also offers a favorites page and a file manager for saving calculations. ### How is the EE ToolKit monetized? The app is available for free with in-app purchases for an upgrade to PRO. Alternatively, users can download a separate PRO version directly, which is fully unlocked from the start without any in-app purchases. ### What devices is the EE ToolKit compatible with? This is a universal app, meaning it is designed to work on both iPhone and iPad devices, offering a consistent experience across Apple's mobile platforms. ### Who would benefit from using the EE ToolKit? The app is highly beneficial for electronics engineers in their professional work, electrical engineering students during their studies, and electronics hobbyists for personal projects. Anyone with an interest in electronics engineering will find practical utility in its extensive features. ## 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 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Electrical Engineering - lite](https://appshunter.io/ios/app/electrical-engineering-lite/id929996924) | 4.7 (251) | Free | Education | | [Electrical Engineering Pack](https://appshunter.io/ios/app/electrical-engineering-pack/id505423236) | 4.7 (75) | $4.99 | Education | | [EveryCircuit](https://appshunter.io/ios/app/everycircuit/id797157761) | 3.0 (65) | Free | Education | | [Simurelay](https://appshunter.io/ios/app/simurelay/id1580180864) | 3.9 (17) | Free | Education | | [Electrical Wiring Simulator](https://appshunter.io/ios/app/electrical-wiring-simulator/id1638500625) | 4.7 (190) | Free | Education | | [Arduino Programming Tutorial](https://appshunter.io/ios/app/arduino-programming-tutorial/id6446804186) | — | Free | Education | ## More apps by Thomas Gruber - [EE ToolKit PRO](https://appshunter.io/ios/app/ee-toolkit-pro/id368780426) - [EE ToolKit PRO for iPad](https://appshunter.io/ios/app/ee-toolkit-pro-for-ipad/id393145367) - [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 ## Related topics [electrical engineering](https://appshunter.io/ios/topics/electrical-engineering) · [electronics game](https://appshunter.io/ios/topics/electronics-game) · [electronics simulators](https://appshunter.io/ios/topics/electronics-simulators) · [pcb design](https://appshunter.io/ios/topics/pcb-design) · [electronics calculator](https://appshunter.io/ios/topics/electronics-calculator) · [electronics learning](https://appshunter.io/ios/topics/electronics-learning) · [engineering tool](https://appshunter.io/ios/topics/engineering-tool) · [electronics](https://appshunter.io/ios/topics/electronics) · [electronics education](https://appshunter.io/ios/topics/electronics-education) · [computer engineering](https://appshunter.io/ios/topics/computer-engineering) · [circuit design](https://appshunter.io/ios/topics/circuit-design) · [circuit calculator](https://appshunter.io/ios/topics/circuit-calculator) · [electronic toolbox pro](https://appshunter.io/ios/topics/electronic-toolbox-pro) · [electrical engineering game](https://appshunter.io/ios/topics/electrical-engineering-game) · [electronic components](https://appshunter.io/ios/topics/electronic-components) · [electronics engineer helper](https://appshunter.io/ios/topics/electronics-engineer-helper) · [schematics](https://appshunter.io/ios/topics/schematics) · [electronics reference toolkit](https://appshunter.io/ios/topics/electronics-reference-toolkit) · [electric circuit](https://appshunter.io/ios/topics/electric-circuit) · [irccloud](https://appshunter.io/ios/topics/irccloud) --- *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 2026-08-20.*