iResistors vs EE ToolKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iResistors
This app helps users learn basic electronics by simulating resistor color band identification. Swipe through color bands to see the Ohm value change in real-time. It's a useful tool for students studying electronics.
- Simulates resistor color bands
- Displays Ohm values
- Interactive color band swiping
- Educational tool for electronics
- Real-time value updates
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Swipe on bands.. Colors & Ω's and will change! You ca swipe on colored bands on resistor, and You will see colors changing and the final value in Ohm will be displayed. Useful to learn basic electronics at school.
EE ToolKit
This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component references with datasheet access. The app supports real-time circuit simulations and includes a file manager for saving calculations.
- 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
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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
Screenshots
Verdict
The clearest difference is review sentiment: EE ToolKit at 90% against iResistors's 27%. EE ToolKit also leads on price (Free vs $0.99) and ratings volume (1.4K vs 1). iResistors's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.7). On ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
EE ToolKit is free to download; iResistors costs $0.99 up front. EE ToolKit sells 1 one-off in-app purchase. iResistors asks for nothing beyond the download.
iResistors holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: EE ToolKit has 1.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 27% of iResistors's written reviews are positive against 90% of EE ToolKit's, so the app with the better star average is not the one people write more warmly about.
iResistors ships an update every 10 months, EE ToolKit every 3 months. The most recent releases landed on September 30, 2026 and October 24, 2026 respectively.
| Parameter | iResistors | EE ToolKit |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.7 (1.4K ratings) |
| Positive reviews | 26.7% of reviews | 90.2% of reviews — better |
| Number of ratings | 1 | 1.4K — better |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 289 MB |
| Age rating | 4+ | 4+ |
| Developer | Gian Enrico Conti | Thomas Gruber |
Customer experience
iResistors
EE ToolKit
Bugs and requests
iResistors
Not enough reviews yet to summarise bugs or requests.
EE ToolKit
Reported bugs
2 issues- Locked features not unlocking properly
- Certain tools and calculators not functioning as expected
Requested features
4 requests- 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
In-app purchases
iResistors
No in-app purchases
EE ToolKit
- Complete EE ToolKit Pro Upgrade$9.99
Questions
Is iResistors free?
Is EE ToolKit free?
Which has better reviews, iResistors or EE ToolKit?
Do iResistors or EE ToolKit have ads?
Which is updated more often, iResistors or EE ToolKit?
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