EE ToolKit PRO for iPad vs RPN
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
RPN
This app meticulously simulates a 1973 scientific calculator, offering an authentic vintage experience with advanced features. It includes a paper tape printer, complex number calculations, and enhanced statistical functions. Users can customize its appearance and even use it as a timer or chess clock.
- Photo-realistic HP-45 simulation
- Animated keys with feedback
- Full HP-45 function implementation
- Paper tape printer with export
- Complex number calculations
- Enhanced statistical functions
- Timer and chess clock modes
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RPN-45 HD is a complete simulation of the scientific hand-held calculator HP-45 from 1973. Processing times and behavior have been carefully modelled after the original. Switch to the "Super-45" mode and watch the HP-45 do things never seen before. Features: • Photo-realistic look based on an existing device • Animated keys with adjustable click sound and visual feedback • All functions and operations of the HP-45 fully implemented • Supports "secret" timer. Use it as 12/100-hours timer or even as a chess clock. • Optional hyperbolic functions • Simulation of the HP-45's computation times (optional) • Correct wrong number entries by swiping left across the display • Cut/copy/paste display value • "Live" display of stack and all memory registers (in landscape mode) • Built-in manual • 30 selectable background images, even add your own • HP-91-like paper tape printer: - Supports MAN, ALL, and NORM modes - Quickly insert arbitrary text - Delete any line - Send tape via E-Mail or to any AirPrint-capable printer - Ribbon color black or blue - Optionally print negative results in red - Print stack and registers • Supports external hardware keyboard Turn on "Super-45" and enjoy a super-charged HP-45: • Complex numbers: available for almost all operations and functions • More memory: twice the number of memory registers. • "Continuous" stack and memory registers • Improved functions: - Raise any number to any power - Factorial of any number, incl. complex - Logarithm and square root of negative numbers - Preset timer with the iPad's real time - Chess clock mode • New functions: - Solve linear equations in two or three unknowns - Find the roots of quadratic and cubic equations - Statistics: normal distribution and correlation coefficient of paired variables - Linear regression, combinations, permutations - Logarithm to any base, incl. complex - Integer and fractional parts - Display rounding - Random numbers in a given range - Day of the week for any date between Jan 1, 0001 and Dec 31, 9999 - Easter date for any year between 1583 and 4099 - Support for Julian dates - Number of days between any two dates - Last Stack - Convert display value to hexadecimal - Percentage of sum - Register arithmetic includes sum registers and LAST x - Clear all registers - Backup registers in a protected area • Enhanced user interface: - Visual indicators for prefix keys and angular modes - Small values switch to scientific notation if required - Localized decimal point - Thousand's separator For more information and sample calculations visit cuveesoft.ch/rpn45/en WHAT USERS SAID: "A great simulation of the HP-45. Beautifully made, with a lot of attention to small details." "This is by far the best RPN calculator available for the iPad!" "This is one of the most accurate but also nicest looking emulators I have come across for the HP-45, or any vintage HP calculator for that matter." "This is exactly what I've been searching. My HP 45 packed up some time ago. Thank you so much!"
Verdict
The clearest difference is price: RPN at $2.99 against EE ToolKit PRO for iPad's $9.99. EE ToolKit PRO for iPad's advantage is review sentiment (86% vs 71%) and ratings volume (81 vs 6). On rating, 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
EE ToolKit PRO for iPad costs $9.99 and RPN $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for EE ToolKit PRO for iPad against 4.8 for RPN. That said, the two scores are not equally well evidenced: EE ToolKit PRO for iPad has 81 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 86% of EE ToolKit PRO for iPad's written reviews are positive against 71% of RPN's.
EE ToolKit PRO for iPad ships an update every 3 months, RPN every 4 months. The most recent releases landed on November 1, 2026 and October 23, 2026 respectively.
| Parameter | EE ToolKit PRO for iPad | RPN |
|---|---|---|
| Price | $9.99 | $2.99 — better |
| Rating | 4.8 (81 ratings) | 4.8 (6 ratings) — better |
| Positive reviews | 86.2% of reviews — better | 70.8% of reviews |
| Number of ratings | 81 — better | 6 |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPad |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 289 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | CuVee Software |
Customer experience
EE ToolKit PRO for iPad
RPN
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
Show 9 moreShow fewer
- 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
RPN
Not enough reviews yet to summarise bugs or requests.
In-app purchases
EE ToolKit PRO for iPad
No in-app purchases
RPN
No in-app purchases
Questions
Is EE ToolKit PRO for iPad free?
Is RPN free?
Which has better reviews, EE ToolKit PRO for iPad or RPN?
Do EE ToolKit PRO for iPad or RPN have ads?
Which is updated more often, EE ToolKit PRO for iPad or RPN?
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