iCircuit1.15.2
Publisher 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 sourcesEXTENSIVE 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 speakersCREATE CUSTOM ELEMENTSBuild sub-circuits and custom elements to componentize your designs and create reusable modules. Share your custom elements with others via the iCircuit Gallery.AUDIO SIMULATIONHear 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/
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 UpdatesThis major update brings powerful new analysis tools, expanded microcontroller support, and numerous improvements.## Bode Plot AnalysisUnlock 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 SearchFind 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 MonitoringProtect 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 typesThank 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.
About iCircuit
The company that develops iCircuit is Krueger Systems, Inc.. The latest version released by its developer is 1.15.2. This app was rated by 8 users of our site and has an average rating of 3.8.
To install iCircuit on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-03-18 and was downloaded 1,217 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the iCircuit as malware if the download link is broken.
How to install iCircuit on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the iCircuit is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After iCircuit is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 1.15.2
posted on 2026-03-18
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.
version 1.15
posted on 2026-02-28
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.
version 1.14.2
posted on 2025-04-23
1.14.2 Fixes crashes when WiFi is disabled
Here are the 1.14 release notes:
Improved element and wire selection.
New elements:
* RGB Led
* 74HC4551 Analog Multiplexer and Demultiplexer
* Custom Element
New capabilities:
* Added the capability to create Custom Elements in an Arduino like way
* Added the capability to add resistors, inductors and capacitors to the Custom Elements
* Added the capability to use SPI bus with Custom elements
* Added the capability to draw shapes over the chip and create animations using the drawing functions in the Custom Elements
* Added the capability to save persistan data through an EEPROM with the Custom Elements
* Added the capability of login to the Gallery directly into the application
* Upload Custom Elements to the Gallery directly from the application
* Create and upload Custom Element revisions directly to the Gallery
* Pull Custom Element revisions from the Gallery directly into the application
Custom Elements:
Fixes:
* SPI disconnections when a modification
* I2C disconnections when a modification
version 1.14.2
posted on 2025-04-23
Apr 23, 2025
Version 1.14.2
1.14.2 Fixes crashes when WiFi is disabled
Here are the 1.14 release notes:
Improved element and wire selection.
New elements:
* RGB Led
* 74HC4551 Analog Multiplexer and Demultiplexer
* Custom Element
New capabilities:
* Added the capability to create Custom Elements in an Arduino like way
* Added the capability to add resistors, inductors and capacitors to the Custom Elements
* Added the capability to use SPI bus with Custom elements
* Added the capability to draw shapes over the chip and create animations using the drawing functions in the Custom Elements
* Added the capability to save persistan data through an EEPROM with the Custom Elements
* Added the capability of login to the Gallery directly into the application
* Upload Custom Elements to the Gallery directly from the application
* Create and upload Custom Element revisions directly to the Gallery
* Pull Custom Element revisions from the Gallery directly into the application
Custom Elements:
Fixes:
* SPI disconnections when a modification
* I2C disconnections when a modification
version 1.14.1
posted on 2025-04-12
Apr 12, 2025
Version 1.14.1
1.14.1 Fixes parallel capacitors.
Here are the 1.14 release notes:
Improved element and wire selection.
New elements:
* RGB Led
* 74HC4551 Analog Multiplexer and Demultiplexer
* Custom Element
New capabilities:
* Added the capability to create Custom Elements in an Arduino like way
* Added the capability to add resistors, inductors and capacitors to the Custom Elements
* Added the capability to use SPI bus with Custom elements
* Added the capability to draw shapes over the chip and create animations using the drawing functions in the Custom Elements
* Added the capability to save persistan data through an EEPROM with the Custom Elements
* Added the capability of login to the Gallery directly into the application
* Upload Custom Elements to the Gallery directly from the application
* Create and upload Custom Element revisions directly to the Gallery
* Pull Custom Element revisions from the Gallery directly into the application
Custom Elements:
Fixes:
* SPI disconnections when a modification
* I2C disconnections when a modification
version 1.14
posted on 2025-03-27
Mar 27, 2025
Version 1.14
Improved element and wire selection.
New elements:
* RGB Led
* 74HC4551 Analog Multiplexer and Demultiplexer
* Custom Element
New capabilities:
* Added the capability to create Custom Elements in an Arduino like way
* Added the capability to add resistors, inductors and capacitors to the Custom Elements
* Added the capability to use SPI bus with Custom elements
* Added the capability to draw shapes over the chip and create animations using the drawing functions in the Custom Elements
* Added the capability to save persistan data through an EEPROM with the Custom Elements
* Added the capability of login to the Gallery directly into the application
* Upload Custom Elements to the Gallery directly from the application
* Create and upload Custom Element revisions directly to the Gallery
* Pull Custom Element revisions from the Gallery directly into the application
Custom Elements:
Fixes:
* SPI disconnections when a modification
* I2C disconnections when a modification
version 1.13
posted on 2024-03-31
Mar 31, 2024
Version 1.13
New elements:
NeoPixels and NeoMatrix
Keypad
Optocoupler
Transmission Lines
Photodiode
Power Supply Jack
Mono (TS), Stereo (TRS) and Headphone (TRRS) Jacks
PCA9685 PWM Board
EEPROMs
SCP1000 Pressure Sensor
Strain Gauges
MPU6050 Accelerometer and Gyroscope
AD5204 and AD5206 Digital Potentiometers
TSC7432 Color Light-To-Digital Converter
New capabilities:
Added the Arduino SPI library
Added the Arduino NeoPixel libraries (from Adafruit)
Added the Arduino EEPROM library
Added the Arduino Adafruit_PWMServoDriver library
Added the Arduino String library
Added the Arduino Keypad library
Photoresistor and Photodiode LED sensitivity
Series 7400 input voltages depends on VCC
Support for SPI and I2C with PIC16F877A
Support for SPI with Arduino (Master mode only)
Calculate light frequency and wavelength in LED infos
Show Internal Ports Voltages as Wires does
Persistant Arduino EEPROM memory
Fixes:
Fix PIC16F877A possible issues
Fix Internal Port bugs
Enable the Capacitor Loop warning (capacitor with no resistance)
version 1.12.2
posted on 2023-02-08
Feb 8, 2023
Version 1.12.2
Version 1.12.2 improves subcircuits and contains all the new features and bug fixes from the big 1.12 release:
New elements:
* Diac and Triac
* Varactor and Memristor
* 7401, 7403, 7409, 7411, 7412, 7413, 7415, 7418, 7419, 7420, 7421, 7422, 7424, 7425, 7426, 7427, 7428, 7433, 7434, 7435, 7436, 7439, 7442, 7443, 7444, 7447, 7449, 7450, 7451, 74L51, 7453, 74H53, 7454, 74H54, 74L54, 7455, 7456, 7457, 7458, 7460, 7464, 7465, 7470, 7471, 74H71, 7472, 7473, 7475, 7476, 7477, 7478, 74LS78, 7480, 7481, 7482, 7483, 7484, 7487, 7489, 7491, 7492, 74100, 74101, 74104, 74105, 74107A, 74108, 74109, 74110, 74112, 74113, 74114, 74116, 74118, 74125, 74126, 74128, 74131, 74132, 74133, 74134, 74135, 74136, 74138, 74139, 74140, 74170, 74224, 74244, 74245, 74540, 74541, 744067, 4006, 4008, 4009, 4010, 4012, 4013, 4014, 4015, 4016, 4018, 4019, 4020, 4021, 4022, 4023, 4024, 4025, 4026, 4027, 4028, 4030, 4031, 4032, 4038, 4040, 4041, 4042, 4043, 4044, 4049
* Servo motor
* LED Matrix
* Spark gap and tunneling diodes
* H-Bridge (L293)
* LM358 VCO
* Triode and Tetrode
* Internal Ports
* Buffer and tristate buffer
* Ten segment LED bar graph
* Internal ports
New capabilities:
* Wire colors with controllable thickness
* Over-voltage warning on ICs
* Over-power ratings on resistors
* Rotate command to quickly re-orient elements
* Support for expressions on Resistor
* Improved support for Arduino structs and arrays
* Added the Arduino Servo library
* Resistance, Frequency, RMS, PP, Min and Max Voltage measurement mode on Gauge
Fixes:
* Better contrast in the element popup editor
* Dark mode and light mode can now be automatic or manual
* Fix low Ohmic potentiometers
* Official symbol for MOSFETs