Comparison

EE ToolKit PRO vs iCircuit

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

iCircuit

Design and simulate analog and digital electronic circuits in real-time. This app offers a comprehensive component library, built-in test equipment, and the ability to create custom elements. It's ideal for learning, prototyping, and validating designs without physical components.

Highlights
  • Real-time circuit simulation
  • Extensive component library (300+)
  • Built-in test equipment (multimeter, oscilloscope)
  • Programmable Arduino and PIC microcontroller support
  • Custom element creation and sharing
  • Audio simulation
Features
Read full description

iCircuit is the premier iPhone and iPad app for designing, simulating, and learning analog and digital electronics. Its advanced simulation engine provides real-time, always-on analysis so your circuits stay powered and live, just like working with real components. Use it like a CAD tool: add components, wire them up, and set their properties. But iCircuit is unlike typical CAD apps because it is always simulating. You do not stop to take a measurement or spend time configuring reports. Instead, you just play with the circuit as you normally would, with the power on. Build circuits with over 300 components, from simple resistors and LEDs to programmable Arduinos (Uno, Nano, Mega, ESP8266, ESP32), PIC microcontrollers, and 60 4000/7400-series digital ICs (more available with Pro). Connect elements, adjust values, and instantly see the results. BUILT-IN TEST EQUIPMENT • Multimeter: Probe any point to read voltage, current, and power • Oscilloscope: Track multiple signals with touch-controlled time scale, stacked/unstacked views, FFT analysis, and Bode plots • Gauges: Visualize voltages, currents, and frequencies directly in your circuit • Signal generators and configurable sources EXTENSIVE COMPONENT LIBRARY • Programmable Arduinos (Uno, Nano, Mega, ESP8266, ESP32) • Programmable PIC microcontrollers (assembly and HEX files, more available with Pro) • Power: Voltage regulators (78xx, LM317), sources, dependent sources, power jacks, and simulated antennas • Analog: Resistors, capacitors, inductors, diodes, BJTs, MOSFETs, thermistors, triodes, and tetrodes • Digital: Logic gates (AND, OR, NAND, NOR, XOR), JK and D flip-flops, and 60 4000/7400-series ICs (180+ available with Pro) • ADCs and DACs • Sensors and displays: LEDs, 7-segment, NeoPixels, matrix displays, thermistors • Electromechanical: Motors, servos, SPST/SPDT and DPST/DPDT switches, push buttons, relays, and speakers CREATE CUSTOM ELEMENTS Build sub-circuits and custom elements to componentize your designs and create reusable modules. Share your custom elements with others via the iCircuit Gallery. AUDIO SIMULATION Hear your circuits. Speakers, buzzers, and microphones produce real audio output. Perfect for students learning electronics, hobbyists prototyping projects, and engineers validating designs, all without burning out a single component. ABOUT ICIRCUIT PRO (OPTIONAL) iCircuit is a complete app with a one-time purchase. iCircuit Pro is optional and adds extra components (including more PICs and a larger 4000/7400 IC library) and helps fund ongoing development. Pro is not required for core simulation or everyday circuit design. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

EE ToolKit PRO4 screens
iCircuit4 screens

Verdict

The call

The clearest difference is rating: EE ToolKit PRO at 4.9 against iCircuit's 3.8. EE ToolKit PRO also leads on in-app purchases (none vs 2) and review sentiment (90% vs 61%). iCircuit's advantage is update cadence (every 3 weeks vs every 3 months) and chart position (#107 vs unranked). On ratings volume, ads, monetization model and device support 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

EE ToolKit PRO costs $9.99 and iCircuit $12.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. 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 3.8. Both are backed by a comparable volume of ratings — 293 and 134 respectively. Written reviews point the same way: 90% of EE ToolKit PRO's written reviews are positive against 61% of iCircuit's.

UpkeepUpdate frequency

EE ToolKit PRO ships an update every 3 months, iCircuit every 3 weeks. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 5 level
EE ToolKit PRO versus iCircuit: the parameters behind the verdict, then further details
ParameterEE ToolKit PROiCircuit
Price$9.99 — better$12.99
Rating4.9 (293 ratings) — better3.8 (134 ratings)
Positive reviews89.6% of reviews — better61.1% of reviews
Number of ratings293 — better134
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
Best chart rank—#107 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better12.2
Further details — not scored
Size289 MB126 MB
Age rating4+4+
DeveloperThomas GruberKrueger Systems, Inc.

Customer experience

EE ToolKit PRO

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

iCircuit

All ratings134 ratings
Positive67.9%
Neutral4.5%
Negative27.6%
Written reviews682 reviews
Positive61.1%
Neutral12.6%
Negative26.2%

User reviews

EE ToolKit PRO

From 293 App Store ratings

What we love

  • 🚀 Top-notch tool
  • 👍 Extremely helpful
  • 🔥 Invaluable for electronics work
  • 💯 Excellent app
  • 🔍 Comprehensive reference

Room to improve

  • 🐛 Occasional crashes or bugs
  • 🔍 UI could be more intuitive
  • 📱 Some features not optimized for mobile
  • 🔢 Limited functionality for advanced users

iCircuit

From 134 App Store ratings

What we love

  • 🚀 Great for learning and testing
  • 👍 Intuitive and easy to use
  • 💡 Programmable Arduino integration
  • 👍 Useful for hobbyists and students

Room to improve

  • 🐛 Buggy and crashes frequently
  • 🔧 Difficult to edit and delete components
  • 🔧 Limited component library
  • 🔧 Inaccurate simulation results in some cases

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

iCircuit

Reported bugs

4 issues
  • Oscilloscope and meter functions not working properly
  • Saving and loading circuits can be unreliable
  • Inconsistent behavior when rotating/flipping components
  • Crashes when working with larger or more complex circuits

Requested features

5 requests
  • More components (e.g. transformers, triodes, MOSFETs)
  • Ability to create custom components
  • Frequency domain analysis (Bode plots, FFT)
  • Improved wiring and component placement controls
  • Better support for AC circuits and motors

In-app purchases

None

EE ToolKit PRO

No in-app purchases

2 purchases

iCircuit

Subscriptions2
  • iCircuit Pro (Monthly)$1.991 Month
  • iCircuit Pro (Yearly)$14.991 Year

Questions

Is EE ToolKit PRO free?
EE ToolKit PRO costs $9.99, with no in-app purchases.
Is iCircuit free?
iCircuit costs $12.99, and also offers in-app purchases.
Which has better reviews, EE ToolKit PRO or iCircuit?
EE ToolKit PRO is rated higher. EE ToolKit PRO averages 4.9 out of 5 from 293 ratings, while iCircuit averages 3.8 from 134 ratings.
Do EE ToolKit PRO or iCircuit have ads?
Neither EE ToolKit PRO nor iCircuit shows ads.
Which is updated more often, EE ToolKit PRO or iCircuit?
EE ToolKit PRO ships an update every 3 months, and iCircuit every 3 weeks. Most recently, EE ToolKit PRO was updated on September 21, 2026 and iCircuit on September 24, 2026.

Other comparisons