Comparison

EE ToolKit PRO vs Calctronics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EE ToolKit PRO

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference sections for electronics engineers, students, and hobbyists. It includes features like a multi-functional keyboard, color code tools, audio scope, and circuit simulations, with ongoing improvements and updates.

Highlights
  • Over 160 electronic applications
  • Multi-functional keyboard
  • Color code and SMD code tools
  • Audio scope and frequency generator
  • Component reference section with datasheets
  • 555 Timer tools
  • PCB trace impedance calculators
  • Real-time circuit simulations
Features
Read full description

This is the brand-new Electronics Engineering ToolKit PRO! 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! !!! This is a UNIVERSAL App - for iPhone and iPad !!! 100% PRO from the beginning without any In-App purchase! 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

About

Calctronics

This app provides a comprehensive suite of calculators and design tools for electronic engineering. It assists with circuit design, filter analysis, and component calculations for resistors, capacitors, and inductors. Ideal for both professionals and students, it simplifies complex electronic projects.

Highlights
  • Comprehensive calculator collection
  • Filter design with graph plotting
  • Resistor, transistor, capacitor design tools
  • Amplifier and inductor design
  • Circuit analysis and design
  • Offline functionality
Features
Read full description

Introducing the ultimate electronic engineering app! With its comprehensive collection of calculators and design tools, you'll be able to tackle any electronic project with ease. Our app features a filter design calculator that allows you to plot graphs, making it easier to visualize your calculations. Additionally, we've included resistor, transistor, capacitor, amplifier, and inductor design tools to help you tackle any electronic design problem. Whether you're a professional electronic engineer or just starting out, this app is the perfect tool to have in your arsenal. Download now and experience the power of electronic engineering in the palm of your hand! Here are some stuffs you can do with the app:- Circuit design Electrical calculations Filter design Resistor calculations Transistor design Capacitor design Amplifier design Inductor design Electrical engineering tools Electronic engineering calculator Circuit analysis --- The app contains the following calculators --- • Resistor Colour Code • Resistors in series and parallel • Capacitors in series and parallel • Capacitor charge • Resistor's Y to delta and delta to Y Converter • Resistor's Pi, Tee and bridge Tee attenuator • SMD Resistor Code • Capacitor Code includes polyester and ceramic capacitors • Ohm's Law • Transistor amplifier calculator • Filters Sallen-Key active filter, Butterworth, Chebyshev and Bessel filters • Voltage divider • Resistor Ratio • Skin depth • Decibel to Watt and Watt to decibel converter • Coaxial cable and 2 parallel wires impedance and capacitance calculator • Operational Amplifier eg inverting amplifier, Difference amplifier and Non inverting amplifier • LED series Resistor Calculator • Adjustable voltage regulator • 555 timer Calculator including Astable and monostable timer • Power dissipation • Micro strip trace width and impedance calculator • Inductor Design Tool • Cylinderical wave guide Calculator • Rectangular wave guide Calculator • PCB Trace Width Calculator • Series capacitor, inductor and resistor Resonance • Capacitive Reactance • Inductive Reactance • Power Calculator • Decibel Converter • Crossover calculator • Band pass and Band reject filter design Whether you're a professional engineer or a student learning about electronics, Electronics Calculator Pro is the perfect tool for your circuit design needs. With its comprehensive set of calculator tools and offline functionality, you'll have everything you need to design and analyze your circuits with confidence. Try it out today!

Screenshots

EE ToolKit PRO4 screens
Calctronics4 screens

Verdict

The call

The clearest difference is review sentiment: EE ToolKit PRO at 90% against Calctronics's 14%. EE ToolKit PRO also leads on rating (4.9 vs 4.0) and in-app purchases (none vs 1). Calctronics's advantage is price (Free vs $9.99). On update cadence, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Calctronics is free to download; EE ToolKit PRO costs $9.99 up front. Calctronics sells 1 one-off in-app purchase. EE ToolKit PRO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EE ToolKit PRO holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: EE ToolKit PRO has 293 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 90% of EE ToolKit PRO's written reviews are positive against 14% of Calctronics's.

UpkeepUpdate frequency

EE ToolKit PRO ships an update every 3 months, Calctronics every 2 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

Scorecard7 real differences · 3 level
EE ToolKit PRO versus Calctronics: the parameters behind the verdict, then further details
ParameterEE ToolKit PROCalctronics
Price$9.99Free — better
Rating4.9 (293 ratings) — better4.0 (5 ratings)
Positive reviews89.6% of reviews — better14.3% of reviews
Number of ratings293 — better5
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size289 MB35 MB
Age rating4+4+
DeveloperThomas GruberAnas Abubakar

Customer experience

EE ToolKit PRO

All ratings293 ratings
Positive98.0%
Neutral0.7%
Negative1.4%
Written reviews164 reviews
Positive89.6%
Neutral4.9%
Negative5.5%

Calctronics

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews7 reviews
Positive14.3%
Neutral14.3%
Negative71.4%

Bugs and requests

EE ToolKit PRO

Reported bugs

3 issues
  • 7400 routine causes app to close
  • Resistor value calculation issues
  • Compatibility problems with newer iOS versions

Requested features

5 requests
  • Add support for vacuum tubes
  • Implement logarithmic frequency sweep
  • Include more component pinout information
  • Integrate a circuit builder/simulator
  • Add DB to RMS and peak-to-peak conversion

Calctronics

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

EE ToolKit PRO

No in-app purchases

1 purchases

Calctronics

One-time1
  • Upgrade to the Pro version$2.99

Questions

Is EE ToolKit PRO free?
EE ToolKit PRO costs $9.99, with no in-app purchases.
Is Calctronics free?
Calctronics is free to download, with in-app purchases available.
Which has better reviews, EE ToolKit PRO or Calctronics?
EE ToolKit PRO is rated higher. EE ToolKit PRO averages 4.9 out of 5 from 293 ratings, while Calctronics averages 4.0 from 5 ratings.
Do EE ToolKit PRO or Calctronics have ads?
Calctronics shows ads; EE ToolKit PRO does not.
Which is updated more often, EE ToolKit PRO or Calctronics?
EE ToolKit PRO ships an update every 3 months, and Calctronics every 2 months. Most recently, EE ToolKit PRO was updated on September 21, 2026 and Calctronics on September 9, 2026.

Other comparisons