Comparison

iCircuit vs EE ToolKit PRO for iPad

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

Head to head
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/

About

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.

Highlights
  • 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
Features
Read full description

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

Screenshots

iCircuit4 screens

Verdict

The call

The clearest difference is rating: EE ToolKit PRO for iPad at 4.8 against iCircuit's 3.8. EE ToolKit PRO for iPad also leads on in-app purchases (none vs 2) and review sentiment (86% vs 61%). iCircuit's advantage is update cadence (every 3 weeks vs every 3 months) and chart position (#167 vs unranked). On ratings volume, ads, monetization model 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

iCircuit costs $12.99 and EE ToolKit PRO for iPad $7.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. EE ToolKit PRO for iPad asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EE ToolKit PRO for iPad holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 134 and 79 respectively. Written reviews point the same way: 61% of iCircuit's written reviews are positive against 86% of EE ToolKit PRO for iPad's.

UpkeepUpdate frequency

iCircuit ships an update every 3 weeks, EE ToolKit PRO for iPad every 3 months. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

Scorecard7 real differences · 4 level
iCircuit versus EE ToolKit PRO for iPad: the parameters behind the verdict, then further details
ParameteriCircuitEE ToolKit PRO for iPad
Price$12.99$7.99 — better
Rating3.8 (134 ratings)4.8 (79 ratings) — better
Positive reviews61.1% of reviews86.2% of reviews — better
Number of ratings134 — better79
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
Best chart rank#167 — better
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS12.212.0 — better
Further details — not scored
Size126 MB289 MB
Age rating4+4+
DeveloperKrueger Systems, Inc.Thomas Gruber

Customer experience

iCircuit

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

EE ToolKit PRO for iPad

All ratings79 ratings
Positive94.9%
Neutral2.5%
Negative2.5%
Written reviews109 reviews
Positive86.2%
Neutral3.7%
Negative10.1%

User reviews

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

EE ToolKit PRO for iPad

From 79 App Store ratings

What we love

  • 👍 Extremely useful for engineers and DIYers
  • 💡 Comprehensive information and tools
  • 🚀 Saves time and frustration
  • ✅ Logical and easy to understand
  • 💰 Excellent value for money

Room to improve

  • 🐛 Missing key components (e.g., BJT 2N3904)
  • 🐛 Duplicate app versions (Pro Universal vs. Pro iPad)
  • 🐛 Lack of developer response to inquiries
  • 🐛 Basic functionality in some areas
  • 🐛 UI needs improvement

Bugs and requests

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

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
Show 3 more
  • 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 more
  • 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

In-app purchases

2 purchases

iCircuit

Subscriptions2
  • iCircuit Pro (Monthly)$1.991 Month
  • iCircuit Pro (Yearly)$14.991 Year
None

EE ToolKit PRO for iPad

No in-app purchases

Questions

Is iCircuit free?
iCircuit costs $12.99, and also offers in-app purchases.
Is EE ToolKit PRO for iPad free?
EE ToolKit PRO for iPad costs $7.99, with no in-app purchases.
Which has better reviews, iCircuit or EE ToolKit PRO for iPad?
EE ToolKit PRO for iPad is rated higher. iCircuit averages 3.8 out of 5 from 134 ratings, while EE ToolKit PRO for iPad averages 4.8 from 79 ratings.
Do iCircuit or EE ToolKit PRO for iPad have ads?
Neither iCircuit nor EE ToolKit PRO for iPad shows ads.
Which is updated more often, iCircuit or EE ToolKit PRO for iPad?
iCircuit ships an update every 3 weeks, and EE ToolKit PRO for iPad every 3 months. Most recently, iCircuit was updated on September 24, 2026 and EE ToolKit PRO for iPad on September 9, 2026.

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