EE ToolKit PRO for iPad vs iMSO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EE ToolKit PRO for iPad
This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for electronics engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component reference section with datasheet integration.
- 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
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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
iMSO
Transform your mobile device into a powerful mixed-signal oscilloscope. Analyze analog and digital signals with intuitive controls and advanced measurement features. A demo mode is available for free, with hardware required for full functionality.
- Mixed-signal oscilloscope
- Analog and digital signal analysis
- Simulated wave display
- Cursors with measurements
- Direct signal measurements
- Analog and digital triggering
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Oscilloscope your phone, touch or tablet! iMSO allows you to analyze 2 analog and up to 4 digital signals using the iMSO-204 mixed signal oscilloscope hardware. Although demo mode is available for free with this download, hardware must be purchased to fully enable the product. - It's the first mixed signal oscilloscope available in the app store (50MSPS / 5MHz) - Easiest, most intuitive scope you’ll ever use - Preferred scope for the next generation of inventors Software demo mode includes: - Simulated wave display (sine, square, sawtooth, and triangular) - Cursors w/ measurements - Direct signal measurements - Analog triggering - Run / Stop / Single mode Hardware mode includes: - Analog triggering - Digital triggering - Cursors w/ measurements - Direct signal measurements - 1x or 10x probe setting - Run / STOP / Single mode Hardware works with the following devices: - iPad mini 3 - iPad mini 2 - iPad mini - iPad Air 2 - iPad Air - iPad 4 - iPad 3 - iPad 2 - iPad - iPhone 6 Plus - iPhone 6 - iPhone 5C - iPhone 5S - iPhone 5 - iPhone 4S - iPhone 4 - iPhone 3GS - iPod touch [3rd (32GB only), 4th and 5th generation)
Screenshots
Verdict
The clearest difference is price: iMSO at Free against EE ToolKit PRO for iPad's $7.99. iMSO also leads on device support (3 vs 1). EE ToolKit PRO for iPad's advantage is rating (4.8 vs 3.2) and ratings volume (79 vs 6). On review sentiment, update cadence, ads and in-app purchases 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
iMSO is free to download; EE ToolKit PRO for iPad costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EE ToolKit PRO for iPad holds the better App Store score, 4.8 against 3.2. That said, the two scores are not equally well evidenced: EE ToolKit PRO for iPad has 79 ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 86% and 86% positive.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.
| Parameter | EE ToolKit PRO for iPad | iMSO |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 4.8 (79 ratings) — better | 3.2 (6 ratings) |
| Positive reviews | 86.2% of reviews — better | 85.7% of reviews |
| Number of ratings | 79 — better | 6 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 289 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | Oscium LLC |
Customer experience
EE ToolKit PRO for iPad
iMSO
Bugs and requests
EE ToolKit PRO for iPad
Reported bugs
8 issues- BJT icon for 2N3904 exists but component is missing
- iPad version is exactly the same as iPhone/iPad Pro Universal version
- No option to go back to menu page after selecting a category
- Adjusting capacitor affects inductor circuit calculation
- PD resistors are transposed
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- Resistors for adjustable regulator calculator are transposed
- Resistor/inductor impedance calculator does not work
- Some bugs make certain circuits not function properly
Requested features
14 requests- Add BJT 2N3904 and other low noise general purpose parts
- Add wiring for On On On switch
- Add USB-C connector pin-outs
- Improve resistor divider tool to recommend resistor values
- Add vacuum tube amplifier information
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- Add Field and waves information
- Add transformer, inductor, and electromagnetism category
- Include audio applications of the 555 timer
- Add more reference circuits (active filters, op-amp, SMPS)
- Add resistor ladder calculator
- Add 4000 series ICs
- Add transformer section with power factor calculations
- Improve UI design and layout
- Add dark mode option
iMSO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
EE ToolKit PRO for iPad
No in-app purchases
iMSO
No in-app purchases









