iCircuit Downloads & RevenueiCircuit · App Store
iCircuit is #11 in Education Paid in France and charting in 8 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperKrueger Systems, Inc.
CategoryEducation
Price12.99 USD
Released
Rating★ 3.9 (153)
Version1.16
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)10k+ worldwide
📈Entered the top 10⭐Passed 100 ratings🚀Now shown next to 电子工具与电路计算器 Pro, Digital Electronics Guide, Digital Electronics Pro +4 more📈Entered the top 10⭐Passed 100 ratings✏️Description updated✏️Description updated📦Updated to version 1.16📦First update in 208 days🆕First spotted by AppInsider
Full timeline · 34 events
- 📈iCircuit entered the top 10Top Paid · Education · FR
- 🚀iCircuit: now shown next to 电子工具与电路计算器 Pro, Digital Electronics Guide, Digital Electronics Pro +4 morethe store's “similar apps” for it changed: who it's seen as competing with
- 📈iCircuit entered the top 10Top Paid · Education · AE
- 📈iCircuit entered the top 10Top Paid · Education · CA
- 📈iCircuit entered the top 100Top Paid · Education · FR
- 📈iCircuit entered the top 10Top Paid · Education · BR
- 📈iCircuit entered the top 100Top Paid · Education · IN
- ✏️iCircuit: description updated· CN
- 📈iCircuit entered the top 10 on iPad · Top Paid All AppsTW
- 📈iCircuit entered the top 100Top Paid · Education · CN
- 📈iCircuit charting in a new countrySouth Africa
- ✏️iCircuit: description updated· US
- 📈iCircuit new best rank in the overall chart: #126Top Paid · All Apps · CO
- ✏️iCircuit: description updated· DE
- ✏️iCircuit: description updated· CA, AU
- ✏️iCircuit: description updated· IN, FR
- ✏️iCircuit moved categoryProductivity → Education
- ✏️iCircuit: app got bigger132 MB → 187 MB (+41%)
- ✏️iCircuit: needs a newer iOSiOS 12.2 → iOS 13.0
- ✏️iCircuit: description updated· 16 countries
- 📦iCircuit updated to version 1.16iCircuit 1.16 is the biggest update in years: real SPICE subcircuits, Verilog and VHDL simulation, and fully emulated Raspberry Pi Pico boards running genuine MicroPython and CircuitPython, all in the same real-time simulator you already know.
RASPBERRY PI PICO & PICO 2, FULLY EMULATED
Drop a Raspberry Pi Pico or Pico 2 into your circuit and write Python! iCircuit boots real MicroPython 1.28 and CircuitPython 10.2 firmware on machine-level emulations of the RP2040 and RP2350 processors, your choice of firmware per board.
• Write Python right in the app: syntax-highlighted editor with edit-time error checking and multi-file projects
• Interactive serial console with a Serial Plotter running alongside
• Real tracebacks with actual file and line numbers, just like on hardware
• GPIO, PWM, ADC, and I2C/SPI/UART buses interact with the rest of your circuit in real time
• Labeled pin roles, on-board LED, and effective emulated clock speed in the info panel
SPICE SUBCIRCUITS
Import industry-standard SPICE models and use them as first-class circuit elements:
• Transistors and diodes with .MODEL cards: BJTs, MOSFETs, and multi-emitter BJTs
• All dependent sources (E, F, G, H) and independent V/I sources with standard waveforms
• Nested subcircuits with parameters
• Coupled inductors (K mutual inductance)
• .INCLUDE, .IC, and .TEMP directives, with graceful handling of analysis commands
• Robust, case-insensitive parsing with clear error messages
Grab a vendor's SPICE model off the web and simulate it right in iCircuit.
VERILOG AND VHDL
The new HDL element compiles and simulates synthesizable Verilog and VHDL in real time. Design a counter, a state machine, or glue logic in the language you use at work or school, wire it to LEDs, switches, and the rest of your analog circuit, and watch it run.
NEW ELEMENTS
• I2C sensors: HDC1080 humidity, MLX90614 IR thermometer, DS1307/DS3231 real-time clocks, ADS1115 16-bit ADC, readable straight from Python
• AC Current Source, On-Off-On Switch, multiple-emitter BJTs, and OB2512RN offline PSR power switch
• 74138, 74139, 7483, 74107, and 74245 added to the Standard set
• Better power jacks and TRS jacks
ARDUINO
• Drive SSD1306 OLED displays with the Adafruit_SSD1306 and Adafruit_GFX libraries
• Keep sketches in external script files and share them between circuits
• Export sketches to use on real hardware
• Configurable console size and plotting from your sketch
EDITOR AND ANALYSIS (iPhone, iPad, and Mac)
• Rectangular selection
• Disconnect an element without deleting wires by hand
• The canvas grows automatically when you drop elements near the edge
• Color-code wires and elements
• Help text for every property in the Inspector
• Assign keys to momentary switches and play your circuit like an instrument
• XY scope mode for Lissajous figures and I/V curves
• FFT export
• Parts List (BOM) export as CSV, compatible with EasyEDA/JLCPCB part search
BUG FIXES
• Fixed inverter values when exporting, a crash in net labeling, and custom IC drawing clipping
• More accurate component power warnings
• More realistic I2C and SPI bus behavior
• Many SPICE, HDL, and simulation correctness fixes, validated by 775 automated circuit tests
SMOOTHER EDITING
• Redo is one long-press away: just hold the Undo button
• Apple Pencil now works everywhere your finger does
Thank you for your continued support! Whether you're learning electronics, teaching a class, prototyping a product, or just having fun, we hope v1.16 makes iCircuit more useful than ever.… more - 📦iCircuit: first update in 208 days
- 📈iCircuit entered the top 10Top Paid · Productivity · JP
- 📈iCircuit new best rank in the overall chart: #129Top Paid · All Apps · JP
- 📈iCircuit entered the top 10Top Paid · Productivity · CA
- 📈iCircuit charting in a new country in 5 chartsAustralia · Spain · Italy · United States · +1 more
- 🆕iCircuit first spotted by AppInsider#45 in Top Paid · Productivity · Saudi Arabia
- 📦iCircuit version 1.15.2This small update fixes signing into the iCircuit Gallery to upload custom elements and fixes the link to the iCircuit Manual.
1.15.1: Fixes the lasso selection tool, fixes crashes on iOS 12 devices, fixes thumbnail generation, and it fixes the D12 port label on Arduino Nanos
# Version 1.5 Updates
This major update brings powerful new analysis tools, expanded microcontroller support, and numerous improvements.
## Bode Plot Analysis
Unlock frequency response analysis with new Bode plot capabilities! Visualize how your circuits respond across frequencies with magnitude and phase plots. Perfect for analyzing filters, amplifiers, and frequency-dependent circuits. See cutoff frequencies, gain characteristics, and phase relationships at a glance.
## Expanded Microcontroller Support
- **Arduino Mega** - Build bigger projects with 54 digital I/O pins and 16 analog inputs
- **Arduino Nano** - Compact board ideal for small-scale applications
- **ESP32 and ESP8266** - Enhanced support for popular IoT microcontrollers
## New Circuit Elements
- **AC Motor** - Single phase AC induction motor
- **Barrel Connector** - Professional DC power jack for your circuits with configurable shunt terminal
- **Improved Power Supply Jack** with better connection handling
## Quick Search
Find circuit elements faster than ever! New search bar lets you instantly locate components without scrolling through categories. Just start typing and get to building.
## Voltage Monitoring
Protect your circuits with automatic under-voltage and over-voltage warnings. Get notified when components are operating outside their safe voltage ranges, helping prevent damage to sensitive ICs and ensuring reliable operation.
## Element Library Organization
- New Microcontroller category for better organization
- Improved element filtering options
- Elements sorted by Pro availability for easier discovery
## Bug Fixes
- Fixed photodiode and photoresistor light source selection
- Removed false capacitor loop errors that prevented valid circuits from running
- Added input voltage tolerance for digital ICs to prevent spurious warnings from minor voltage fluctuations
- Better handling of Arduino EEPROM and multiple board types
Thank you for your continued support! Whether you're learning electronics, prototyping professional designs, or just having fun building circuits, we hope v1.15 makes your experience even better.… more - 🆕iCircuit released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.9 ★
153 ratings
Measured
Best rank now
#11
Education PaidMeasured
New ratings a week
8
▲ +43% vs the 2 weeks before
Measured
iCircuit at a glance
AI summary written from our chart and store data, 2026-11-03. It can be wrong: check the numbers above.
iCircuit is a paid educational tool for iPhone and iPad that enables users to design, simulate, and analyze analog and digital electronics in real time using an extensive library of components including microcontrollers. The app holds strong positions in the UAE (#2) and Canada (#11) Education Paid charts, indicating sustained relevance in specific regional markets despite lower rankings elsewhere.
Similar apps: EveryCircuit, Tinkercad Circuits, Falstad Circuit Simulator
iCircuit on the App Store
App details
App ID
383359044
Publisher
Krueger Systems, Inc.
On the store since
Jul 2010
16 years on the store
Minimum OS
iOS 13.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
10
EN FR DE IT JA PT RU ZH ES ZH
Size
187 MB
Also listed in
Productivity
App privacy Measured
iCircuit’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 1 collected anonymously.
Used to track you
0
Linked to you
0
Not linked to you
1
Not linked to you
DDiagnostics
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
iCircuit downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where iCircuit's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| France | EducationPaid | #11 |
 South Korea | EducationPaid | #102 |
 Brazil | EducationPaid | #82 |
| Saudi Arabia | EducationPaid | #55 |
 Canada | EducationPaid | #112 |
 United Arab Emirates | EducationPaid | #87 |
 Russia | EducationPaid | #193 |
 Indonesia | EducationPaid | #184 |
Apps near iCircuit on the chart
Education Paid, around #11.
Ratings
App Store, worldwide.
Rating
3.9 ★
153 ratings
Measured
Ratings
153
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
8
▲ +43% vs the 2 weeks before
Written reviews a week
under 1
US App Store
Lifetime rating
3.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
76/100
faster than 83% of Education apps
Growing fastest in 
United States ▲ +100%
New ratings by country (2)
| Country | New ratings a week | Share | Last 2 weeks vs the 2 before |
|---|---|---|---|
| United States | 4 | 69% | ▲ +100% |
 Germany | 1.8 | 31% | – |
App Store ratings in the countries we track, 4-week average.
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about iCircuit
From the 52 most recent App Store reviews in the US.
Users report severe instability, including data loss, broken undo functions, and unresponsive UI elements that make the app unusable for serious work. While some praise its ease of use for hobbyists, many feel cheated by a subscription model that restricts previously purchased features and lacks essential components.
Mixed (44% of recent reviews give 4–5 stars). People like it for its design, and its features and content. The main complaints are about crashes and bugs, and price and subscriptions. Recent reviews are more negative than earlier ones.
What people like
- Design: “UI is sometimes hard to use”
- Features & content: “Also a great teaching tool”
- Price & subscription: “Beats expensive alternatives in many ways”
- Updates: “The biggest complaint I and others have had is that the developer is way too busy and that the updates have literally taken years to push out”
Common complaints
- Crashes & bugs: “Too many bugs - not worth it”
- Price & subscription: “Just an expensive distraction”
- Features & content: “Lack luster options , for”
- Design: “This UI is a technical dumpster fire”
About iCircuit
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), Raspberry Pi Pico boards running real MicroPython and CircuitPython, 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
• Raspberry Pi Pico and Pico 2 running genuine MicroPython and CircuitPython firmware
• 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
SPICE, VERILOG, AND VHDL
Import vendor SPICE models and subcircuits and use them as components. Write Verilog or VHDL in the HDL element and wire it to the rest of your circuit.
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
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), Raspberry Pi Pico boards running real MicroPython and CircuitPython, 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
• Raspberry Pi Pico and Pico 2 running genuine MicroPython and CircuitPython firmware
• 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
SPICE, VERILOG, AND VHDL
Import vendor SPICE models and subcircuits and use them as components. Write Verilog or VHDL in the HDL element and wire it to the rest of your circuit.
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
Latest updates
1.16
iCircuit 1.16 is the biggest update in years: real SPICE subcircuits, Verilog and VHDL simulation, and fully emulated Raspberry Pi Pico boards running genuine MicroPython and CircuitPython, all in the same real-time simulator you already know.
RASPBERRY PI PICO & PICO 2, FULLY EMULATED
Drop a Raspberry Pi Pico or Pico 2 into your circuit and write Python! iCircuit boots real MicroPython 1.28 and CircuitPython 10.2 firmware on machine-level emulations of the RP2040 and RP2350 processors, your choice of firmware per board.
• Write Python right in the app: syntax-highlighted editor with edit-time error checking and multi-file projects
• Interactive serial console with a Serial Plotter running alongside
• Real tracebacks with actual file and line numbers, just like on hardware
• GPIO, PWM, ADC, and I2C/SPI/UART buses interact with the rest of your circuit in real time
• Labeled pin roles, on-board LED, and effective emulated clock speed in the info panel
SPICE SUBCIRCUITS
Import industry-standard SPICE models and use them as first-class circuit elements:
• Transistors and diodes with .MODEL cards: BJTs, MOSFETs, and multi-emitter BJTs
• All dependent sources (E, F, G, H) and independent V/I sources with standard waveforms
• Nested subcircuits with parameters
• Coupled inductors (K mutual inductance)
• .INCLUDE, .IC, and .TEMP directives, with graceful handling of analysis commands
• Robust, case-insensitive parsing with clear error messages
Grab a vendor's SPICE model off the web and simulate it right in iCircuit.
VERILOG AND VHDL
The new HDL element compiles and simulates synthesizable Verilog and VHDL in real time. Design a counter, a state machine, or glue logic in the language you use at work or school, wire it to LEDs, switches, and the rest of your analog circuit, and watch it run.
NEW ELEMENTS
• I2C sensors: HDC1080 humidity, MLX90614 IR thermometer, DS1307/DS3231 real-time clocks, ADS1115 16-bit ADC, readable straight from Python
• AC Current Source, On-Off-On Switch, multiple-emitter BJTs, and OB2512RN offline PSR power switch
• 74138, 74139, 7483, 74107, and 74245 added to the Standard set
• Better power jacks and TRS jacks
ARDUINO
• Drive SSD1306 OLED displays with the Adafruit_SSD1306 and Adafruit_GFX libraries
• Keep sketches in external script files and share them between circuits
• Export sketches to use on real hardware
• Configurable console size and plotting from your sketch
EDITOR AND ANALYSIS (iPhone, iPad, and Mac)
• Rectangular selection
• Disconnect an element without deleting wires by hand
• The canvas grows automatically when you drop elements near the edge
• Color-code wires and elements
• Help text for every property in the Inspector
• Assign keys to momentary switches and play your circuit like an instrument
• XY scope mode for Lissajous figures and I/V curves
• FFT export
• Parts List (BOM) export as CSV, compatible with EasyEDA/JLCPCB part search
BUG FIXES
• Fixed inverter values when exporting, a crash in net labeling, and custom IC drawing clipping
• More accurate component power warnings
• More realistic I2C and SPI bus behavior
• Many SPICE, HDL, and simulation correctness fixes, validated by 775 automated circuit tests
SMOOTHER EDITING
• Redo is one long-press away: just hold the Undo button
• Apple Pencil now works everywhere your finger does
Thank you for your continued support! Whether you're learning electronics, teaching a class, prototyping a product, or just having fun, we hope v1.16 makes iCircuit more useful than ever.
1.15.2
This small update fixes signing into the iCircuit Gallery to upload custom elements and fixes the link to the iCircuit Manual.
1.15.1: Fixes the lasso selection tool, fixes crashes on iOS 12 devices, fixes thumbnail generation, and it fixes the D12 port label on Arduino Nanos
# Version 1.5 Updates
This major update brings powerful new analysis tools, expanded microcontroller support, and numerous improvements.
## Bode Plot Analysis
Unlock frequency response analysis with new Bode plot capabilities! Visualize how your circuits respond across frequencies with magnitude and phase plots. Perfect for analyzing filters, amplifiers, and frequency-dependent circuits. See cutoff frequencies, gain characteristics, and phase relationships at a glance.
## Expanded Microcontroller Support
- **Arduino Mega** - Build bigger projects with 54 digital I/O pins and 16 analog inputs
- **Arduino Nano** - Compact board ideal for small-scale applications
- **ESP32 and ESP8266** - Enhanced support for popular IoT microcontrollers
## New Circuit Elements
- **AC Motor** - Single phase AC induction motor
- **Barrel Connector** - Professional DC power jack for your circuits with configurable shunt terminal
- **Improved Power Supply Jack** with better connection handling
## Quick Search
Find circuit elements faster than ever! New search bar lets you instantly locate components without scrolling through categories. Just start typing and get to building.
## Voltage Monitoring
Protect your circuits with automatic under-voltage and over-voltage warnings. Get notified when components are operating outside their safe voltage ranges, helping prevent damage to sensitive ICs and ensuring reliable operation.
## Element Library Organization
- New Microcontroller category for better organization
- Improved element filtering options
- Elements sorted by Pro availability for easier discovery
## Bug Fixes
- Fixed photodiode and photoresistor light source selection
- Removed false capacitor loop errors that prevented valid circuits from running
- Added input voltage tolerance for digital ICs to prevent spurious warnings from minor voltage fluctuations
- Better handling of Arduino EEPROM and multiple board types
Thank you for your continued support! Whether you're learning electronics, prototyping professional designs, or just having fun building circuits, we hope v1.15 makes your experience even better.
Store changes
What iCircuit changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated 
Description updated
Description updated
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