PROTO - circuit simulator
9.2 1K+
v1.49.1 by PROTO
About PROTO
PROTO (Package Name: com.proto.circuitsimulator) is developed by PROTO and the latest version of PROTO - circuit simulator 1.49.1 was updated on June 29, 2026. PROTO - circuit simulator is in the category of Education. You can check all apps from the developer of PROTO - circuit simulator and find 158 alternative apps to PROTO - circuit simulator on Android. Currently this app is for free. This app can be downloaded on Android 6.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.
Are you looking for tools like Multisim, SPICE, LTspice, Proteus, Altium or PhET simulations? That's great! PROTO is an real time electronic circuit simulator which means you are able to setup a circuit with various components and simulate behaviour of the electronic circuit ⚡
During simulation you can check voltages, currents and many other variables. Check signals on multichannel oscilioscope and tune your circuit in real time! Our app can greatly help with your Raspberry Pi, Arduino or ESP32 project. You can also use PROTO as logic circuit simulator and perform digital electronic analysis!
ℹ️ You can report an issue or make component request at Github
👉 Features:
✅ Animations of voltage values and current flows
✅ Adjusts circuit parameters (like voltage, current and other)
✅ Four-channel oscilloscope
✅ Single play/pause button to control simulation
✅ Copy electronic components
✅ Learn about electronic circuits by examples in app
✅ Share circuit with friends
✅ Themes (Dark, Light, Ocean, Solarized)
✅ PNG, JPG, PDF circuit export
✅ Export workspace
✅ Video tutorials about electronics
🔥 Arduino support in future
👉 Components:
+ DC, AC, Square, Trinagle, Sawtooth, Pulse, Noise voltage source
+ Current source
+ Resistor
+ Potentiometer
+ Capacitor
+ Polarized capacitor
+ Inductor
+ Transformer
+ Diode (rectifying diode, LED, Zener, Schottky)
+ Transistor (NPN, PNP, N and P channel Mosfet)
+ Switches (SPST, Relay)
+ Bulb
+ Operational amplifier
+ Timer 555 (NE555)
+ Digital Gates (AND, NAND, OR, XOR, NOR, NXOR, Inverter)
+ Voltmeter
+ Ammeter
+ Fuse
+ Photoresistor (uses phone light sensor)
+ Analog-to-digital converter (ADC)
+ Accelerometer (uses phone accelerometer sensor)
+ FM source
+ Logic Input
+ Memristor
+ Logic output
+ Probe
+ Voltage rail
👉 Analog Pack:
+ Tunnel diode
+ Varactor
+ NTC Thermistor
+ Center tapped transformer
+ Schmitt trigger
+ Schmitt trigger (inverting)
+ Solar cell
+ TRIAC
+ DIAC
+ Thyristor
+ Triode
+ Darlington NPN
+ Darlington PNP
+ Analog SPST
+ Analog SPDT
Digital Pack:
+ Adder
+ Counter
+ Latch
+ PISO Register
+ SIPO Register
+ Seven segment decoder
+ Sequence generator
+ D Flip-flop
+ T Flip-flop
+ JK Flip-flop
+ Multiplexer
+ Demultiplexer
+ Voltage controlled current source (VCCS)
+ Voltage controlled voltage source (VCVS)
+ Current controlled current source (CCCS)
+ Current controlled voltage source (CCVS)
+ Optocoupler
👉 Misc Pack:
+ Wobbulator
+ AM Source
+ SPDT Switch
+ Digital to analog converter (DAC)
+ Antenna
+ Spark gap
+ LED Bar
+ 7 segment LED
+ RGB LED
+ Ohmmeter
+ Audio input
+ Microphone
+ Device battery
+ DC Motor
+ 14 segment LED
+ Diode bridge
+ Crystal
+ Voltage regulators (78xx family)
+ TL431
+ Buzzer
+ Frequency meter
👉 JavaScrip Pack:
+ Write code
+ JavaScript interpreter (ES2020 class)
+ Access to IC inputs in code
+ Access to IC outputs in code
+ Four custom ICs
👉 7400 TTL Pack:
+ 7404 - hex inverter
+ 7410 - triple 3-input NAND Gate
+ 7414 - hex Schmitt-trigger inverter
+ 7432 - quadruple 2-input OR gate
+ 7440 - dual 4-input NAND buffer
+ 7485 - 4-bit magnitude comparator
+ 7493 - binary counter
+ 744075 - triple 3-input OR gate
+ 741G32 - single 2-input OR gate
+ 741G86 - single 2-input XOR gate
👉 4000 CMOS Pack:
+ 4000 - dual 3-input NOR gate and inverter.
+ 4001 - quad 2-input NOR gate.
+ 4002 - dual 4-input NOR gate.
+ 4011 - quad 2-input NAND gate.
+ 4016 - quad bilateral switch.
+ 4017 - 5-stage Johnson decade counter.
+ 4023 - triple 3-input NAND gate.
+ 4025 - triple 3-input NOR gate.
+ 4081 - quad 2-input AND gate.
+ 4511 - BCD to 7-segment decoder.
👉 Sensors pack:
+ Pressure
+ Gyroscope
+ Light
+ Magnetic field
+ Proximity
+ Temperature
+ Humidity
During simulation you can check voltages, currents and many other variables. Check signals on multichannel oscilioscope and tune your circuit in real time! Our app can greatly help with your Raspberry Pi, Arduino or ESP32 project. You can also use PROTO as logic circuit simulator and perform digital electronic analysis!
ℹ️ You can report an issue or make component request at Github
👉 Features:
✅ Animations of voltage values and current flows
✅ Adjusts circuit parameters (like voltage, current and other)
✅ Four-channel oscilloscope
✅ Single play/pause button to control simulation
✅ Copy electronic components
✅ Learn about electronic circuits by examples in app
✅ Share circuit with friends
✅ Themes (Dark, Light, Ocean, Solarized)
✅ PNG, JPG, PDF circuit export
✅ Export workspace
✅ Video tutorials about electronics
🔥 Arduino support in future
👉 Components:
+ DC, AC, Square, Trinagle, Sawtooth, Pulse, Noise voltage source
+ Current source
+ Resistor
+ Potentiometer
+ Capacitor
+ Polarized capacitor
+ Inductor
+ Transformer
+ Diode (rectifying diode, LED, Zener, Schottky)
+ Transistor (NPN, PNP, N and P channel Mosfet)
+ Switches (SPST, Relay)
+ Bulb
+ Operational amplifier
+ Timer 555 (NE555)
+ Digital Gates (AND, NAND, OR, XOR, NOR, NXOR, Inverter)
+ Voltmeter
+ Ammeter
+ Fuse
+ Photoresistor (uses phone light sensor)
+ Analog-to-digital converter (ADC)
+ Accelerometer (uses phone accelerometer sensor)
+ FM source
+ Logic Input
+ Memristor
+ Logic output
+ Probe
+ Voltage rail
👉 Analog Pack:
+ Tunnel diode
+ Varactor
+ NTC Thermistor
+ Center tapped transformer
+ Schmitt trigger
+ Schmitt trigger (inverting)
+ Solar cell
+ TRIAC
+ DIAC
+ Thyristor
+ Triode
+ Darlington NPN
+ Darlington PNP
+ Analog SPST
+ Analog SPDT
Digital Pack:
+ Adder
+ Counter
+ Latch
+ PISO Register
+ SIPO Register
+ Seven segment decoder
+ Sequence generator
+ D Flip-flop
+ T Flip-flop
+ JK Flip-flop
+ Multiplexer
+ Demultiplexer
+ Voltage controlled current source (VCCS)
+ Voltage controlled voltage source (VCVS)
+ Current controlled current source (CCCS)
+ Current controlled voltage source (CCVS)
+ Optocoupler
👉 Misc Pack:
+ Wobbulator
+ AM Source
+ SPDT Switch
+ Digital to analog converter (DAC)
+ Antenna
+ Spark gap
+ LED Bar
+ 7 segment LED
+ RGB LED
+ Ohmmeter
+ Audio input
+ Microphone
+ Device battery
+ DC Motor
+ 14 segment LED
+ Diode bridge
+ Crystal
+ Voltage regulators (78xx family)
+ TL431
+ Buzzer
+ Frequency meter
👉 JavaScrip Pack:
+ Write code
+ JavaScript interpreter (ES2020 class)
+ Access to IC inputs in code
+ Access to IC outputs in code
+ Four custom ICs
👉 7400 TTL Pack:
+ 7404 - hex inverter
+ 7410 - triple 3-input NAND Gate
+ 7414 - hex Schmitt-trigger inverter
+ 7432 - quadruple 2-input OR gate
+ 7440 - dual 4-input NAND buffer
+ 7485 - 4-bit magnitude comparator
+ 7493 - binary counter
+ 744075 - triple 3-input OR gate
+ 741G32 - single 2-input OR gate
+ 741G86 - single 2-input XOR gate
👉 4000 CMOS Pack:
+ 4000 - dual 3-input NOR gate and inverter.
+ 4001 - quad 2-input NOR gate.
+ 4002 - dual 4-input NOR gate.
+ 4011 - quad 2-input NAND gate.
+ 4016 - quad bilateral switch.
+ 4017 - 5-stage Johnson decade counter.
+ 4023 - triple 3-input NAND gate.
+ 4025 - triple 3-input NOR gate.
+ 4081 - quad 2-input AND gate.
+ 4511 - BCD to 7-segment decoder.
👉 Sensors pack:
+ Pressure
+ Gyroscope
+ Light
+ Magnetic field
+ Proximity
+ Temperature
+ Humidity
PROTO 1.49.1 Update
• Move and drag multiple components at once• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Fix slow simulation start (1.49.1)
Read More
PROTO Features
Related Videos
PROTO - circuit simulator
Previous Versions
More
Variant
Arch
Version
DPI
95
June 28, 2026
PROTO - circuit simulator
1.49.1
(95)
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 7cc5b5787e87dc5fe0747e517002accdea41d3c8
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxhdpi
Size: 18.96 MB
What's New:
• Move and drag multiple components at once
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Fix slow simulation start (1.49.1)
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Fix slow simulation start (1.49.1)
arm64-v8a
nodpi
95
June 29, 2026
PROTO - circuit simulator
1.49.1
(95)
Requires Android: Android 6.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: eef9f5818b95b65f28f3adb0f6fca5d590fb25f7
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.armeabi_v7a, config.xhdpi
Size: 17.31 MB
What's New:
• Move and drag multiple components at once
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Fix slow simulation start (1.49.1)
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Fix slow simulation start (1.49.1)
armeabi-v7a
Android 6.0+
nodpi
Variant
Arch
Version
DPI
94
June 10, 2026
PROTO - circuit simulator
1.49.0
(94)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 589d670d2ee5705da8020a12ec1b60338c90b241
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxxhdpi
Size: 18.95 MB
What's New:
• Move and drag multiple components at once
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
arm64-v8a
Android 6.0+
nodpi
94
June 19, 2026
PROTO - circuit simulator
1.49.0
(94)
Requires Android: Android 6.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: adb1af1215ff0f9e8c596c391095dcbe3f3941b3
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.armeabi_v7a, config.xhdpi
Size: 17.31 MB
What's New:
• Move and drag multiple components at once
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
armeabi-v7a
Android 6.0+
nodpi
94
June 26, 2026
PROTO - circuit simulator
1.49.0
(94)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 4ed1965d3c58cf3dd98282f6fcf73311849ac211
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxhdpi
Size: 18.95 MB
What's New:
• Move and drag multiple components at once
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
• Easier wiring with improved terminal selection
• Smoother zoom in/out
• New examples: comparator and XOR gate
• Android 16 support
• Bug fixes and stability improvements
arm64-v8a
Android 6.0+
nodpi
Variant
Arch
Version
DPI
93
March 26, 2026
PROTO - circuit simulator
1.48.0
(93)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 08785202eb1df1663a484f0abd56aae56266c4b9
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxhdpi
Size: 22.98 MB
What's New:
> Add ability to print circuit directly from PROTO [Actions -> Print circuit]
> Add ability to share circuit via Gmail, Whatsapp, Facebook and more [Actions -> Share circuit]
> Fix wrong TTL 7402 pinout: https://github.com/Proto-App/Proto-Android/issues/450
> Fix wrong zoom behavior: https://github.com/Proto-App/Proto-Android/issues/449
> Add ability to share circuit via Gmail, Whatsapp, Facebook and more [Actions -> Share circuit]
> Fix wrong TTL 7402 pinout: https://github.com/Proto-App/Proto-Android/issues/450
> Fix wrong zoom behavior: https://github.com/Proto-App/Proto-Android/issues/449
arm64-v8a
Android 6.0+
nodpi
93
March 30, 2026
PROTO - circuit simulator
1.48.0
(93)
Requires Android: Android 6.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 8a7cefb37ca11398b673b928b6a468cdbbe03c3a
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.armeabi_v7a, config.xhdpi
Size: 19.99 MB
What's New:
> Add ability to print circuit directly from PROTO [Actions -> Print circuit]
> Add ability to share circuit via Gmail, Whatsapp, Facebook and more [Actions -> Share circuit]
> Fix wrong TTL 7402 pinout: https://github.com/Proto-App/Proto-Android/issues/450
> Fix wrong zoom behavior: https://github.com/Proto-App/Proto-Android/issues/449
> Add ability to share circuit via Gmail, Whatsapp, Facebook and more [Actions -> Share circuit]
> Fix wrong TTL 7402 pinout: https://github.com/Proto-App/Proto-Android/issues/450
> Fix wrong zoom behavior: https://github.com/Proto-App/Proto-Android/issues/449
armeabi-v7a
Android 6.0+
nodpi
Variant
Arch
Version
DPI
92
February 20, 2026
PROTO - circuit simulator
1.47.0
(92)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: cd03ecb7114e7f9b2d4f88cc4b72354f164928d7
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xhdpi
Size: 23 MB
What's New:
> Unify Import/Export/Theme into Actions button.
> Add "Save as" option
> Add ability to rename circuit during simulation
> Add Changelog button to see PROTO releases history
> Add "Save as" option
> Add ability to rename circuit during simulation
> Add Changelog button to see PROTO releases history
arm64-v8a
Android 6.0+
nodpi
92
February 20, 2026
PROTO - circuit simulator
1.47.0
(92)
Requires Android: Android 6.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 624935670be39c2f84de6f47acf237f254f90ebe
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.armeabi_v7a, config.xhdpi
Size: 20.02 MB
What's New:
> Unify Import/Export/Theme into Actions button.
> Add "Save as" option
> Add ability to rename circuit during simulation
> Add Changelog button to see PROTO releases history
> Add "Save as" option
> Add ability to rename circuit during simulation
> Add Changelog button to see PROTO releases history
armeabi-v7a
Android 6.0+
nodpi
92
March 23, 2026
PROTO - circuit simulator
1.47.0
(92)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 4981cd0b2d4c32ea1f1bbe112860be4e4cff7392
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxxhdpi
Size: 23.02 MB
What's New:
> Unify Import/Export/Theme into Actions button.
> Add "Save as" option
> Add ability to rename circuit during simulation
> Add Changelog button to see PROTO releases history
> Add "Save as" option
> Add ability to rename circuit during simulation
> Add Changelog button to see PROTO releases history
arm64-v8a
Android 6.0+
nodpi
More Information
Package Name:
Update Date:
2026-06-29
Latest Version:
1.49.1
Need Update:
Available on:
Requirements:
Android 6.0+
Report:
Safe to Download
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