Comparison

iCircuit vs EzBlock Studio

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

EzBlock Studio

This app enables beginners to program and control SunFounder Raspberry Pi robots using visual block-based coding or Python. It offers features like text-to-speech, camera recognition, and sensor control for interactive robot projects.

Highlights
  • Blockly & Python programming
  • TTS, camera recognition, remote control
  • Music/sound effects, sensor control
  • Drag and drop interface
  • Support for various SunFounder robots
Features
Read full description

EzBlock Studio is an app for programming and controlling SunFounder Raspberry Pi robots, which allows beginners (students) to quickly get started with Raspberry Pi robot programming. It has built-in TTS, camera recognition, remote control, music/sound effects, and sensor control functions. For more information, refer to: ezblock3.rtfd.io. Features 1. Blockly & Python programming 2. Built-in TTS, camera recognition, remote control, music/sound effects, and sensor control functions. 3. Simply drag and drop and then check the effect immediately. 4. Support for SunFounder robots: PiCar-X, PiSloth, PiCrawler, PiArm, Pan-tilt HAT etc. 5. Ages: 7+ Required Devices 1. Raspberry Pi and Accessories 2. SunFounder Robot HAT or products with Robot HAT (Robot HAT online tutorials: robot-hat.rtfd.io) Steps to use 1. Download the Raspberry Pi OS with EzBlock Pre-installed image file here: http://ezblock.cc/download/v31.html. 2. Insert the card and Robot HAT to the Raspberry Pi and start it. 3. Open the downloaded app and select the correct Bluetooth to connect. 4. Configure Wi-Fi. 5. Start to write programs for Raspberry Pi. Tutorials & support Online tutorials: ezblock3.rtfd.io. Email: service@sunfounder.com

Screenshots

iCircuit4 screens
EzBlock Studio4 screens

Verdict

The call

The clearest difference is price: EzBlock Studio at Free against iCircuit's $12.99. EzBlock Studio also leads on in-app purchases (none vs 2) and review sentiment (91% vs 61%). iCircuit's advantage is update cadence (every 3 weeks vs every 3 months) and chart position (#140 vs unranked). On rating, ads, 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

EzBlock Studio is free to download; iCircuit costs $12.99 up front. iCircuit sells 2 in-app purchases, starting at $1.99 per month. EzBlock Studio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EzBlock Studio holds the better App Store score, 4.0 against 3.8. Both are backed by a comparable volume of ratings — 134 and 27 respectively. Written reviews point the same way: 61% of iCircuit's written reviews are positive against 91% of EzBlock Studio's.

UpkeepUpdate frequency

iCircuit ships an update every 3 weeks, EzBlock Studio every 3 months. The most recent releases landed on September 27, 2026 and August 13, 2026 respectively.

Scorecard7 real differences · 4 level
iCircuit versus EzBlock Studio: the parameters behind the verdict, then further details
ParameteriCircuitEzBlock Studio
Price$12.99Free — better
Rating3.8 (134 ratings)4.0 (27 ratings) — better
Positive reviews61.1% of reviews90.7% of reviews — better
Number of ratings134 — better27
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
Best chart rank#140 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.211.0 — better
Further details — not scored
Size126 MB73 MB
Age rating4+4+
DeveloperKrueger Systems, Inc.Shenzhen Maker Stars Technology Co., Ltd.

Customer experience

iCircuit

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

EzBlock Studio

All ratings27 ratings
Positive70.4%
Neutral3.7%
Negative25.9%
Written reviews75 reviews
Positive90.7%
Neutral1.3%
Negative8.0%

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

EzBlock Studio

From 27 App Store ratings

What we love

  • 👍 Very good software
  • 👍 Easy to use
  • 👍 Powerful functions
  • 👍 Great app
  • 👍 Useful

Room to improve

  • 🐛 Setup screen too high
  • 🐛 Cannot connect to WiFi
  • 🐛 Bluetooth pairing not working
  • 🐛 Play Store not supported on Windows
  • 🐛 Cannot input Raspberry Pi name

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

EzBlock Studio

Reported bugs

6 issues
  • Setup screen too high
  • App cannot connect to WiFi
  • Bluetooth pairing not working
  • Confirmation code not sending
  • Cannot input Raspberry Pi name
Show 1 more
  • Play Store not supported on Windows 10 laptop

Requested features

3 requests
  • Install on Windows 10
  • More warm functions
  • Improve professional software

In-app purchases

2 purchases

iCircuit

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

EzBlock Studio

No in-app purchases

Questions

Is iCircuit free?
iCircuit costs $12.99, and also offers in-app purchases.
Is EzBlock Studio free?
EzBlock Studio is free to download, with no in-app purchases.
Which has better reviews, iCircuit or EzBlock Studio?
EzBlock Studio is rated higher. iCircuit averages 3.8 out of 5 from 134 ratings, while EzBlock Studio averages 4.0 from 27 ratings.
Do iCircuit or EzBlock Studio have ads?
Neither iCircuit nor EzBlock Studio shows ads.
Which is updated more often, iCircuit or EzBlock Studio?
iCircuit ships an update every 3 weeks, and EzBlock Studio every 3 months. Most recently, iCircuit was updated on September 27, 2026 and EzBlock Studio on August 13, 2026.

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