PROTO - circuit simulator
9.2 948
v1.44.0 by PROTO
About PROTO
PROTO (Package Name: com.proto.circuitsimulator) is developed by PROTO and the latest version of PROTO - circuit simulator 1.44.0 was updated on November 28, 2025. 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 1.44.0 Update
> Tooltips - you can assign custom tooltip for each component in simulation> Reorganized PROTO menu
> Optimized simulation speed by 10%
> Try to fix JavaScript crashes on devices:
- Redmi A3
- Infinix SMART 9
- Itel itel A50
Read More
PROTO Features
Related Videos
PROTO - circuit simulator
Previous Versions
More
Variant
Arch
Version
DPI
89
November 28, 2025
PROTO - circuit simulator
1.44.0
(89)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: fe6312cc49b1e9121a5e1a924bad6969305d044b
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxxhdpi
Size: 22.75 MB
What's New:
> Tooltips - you can assign custom tooltip for each component in simulation
> Reorganized PROTO menu
> Optimized simulation speed by 10%
> Try to fix JavaScript crashes on devices:
- Redmi A3
- Infinix SMART 9
- Itel itel A50
> Reorganized PROTO menu
> Optimized simulation speed by 10%
> Try to fix JavaScript crashes on devices:
- Redmi A3
- Infinix SMART 9
- Itel itel A50
arm64-v8a
Android 6.0+
nodpi
89
November 28, 2025
PROTO - circuit simulator
1.44.0
(89)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 3def558577598768c78a66d71c5e76330c03ad19
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xhdpi
Size: 22.73 MB
What's New:
> Tooltips - you can assign custom tooltip for each component in simulation
> Reorganized PROTO menu
> Optimized simulation speed by 10%
> Try to fix JavaScript crashes on devices:
- Redmi A3
- Infinix SMART 9
- Itel itel A50
> Reorganized PROTO menu
> Optimized simulation speed by 10%
> Try to fix JavaScript crashes on devices:
- Redmi A3
- Infinix SMART 9
- Itel itel A50
arm64-v8a
Android 6.0+
nodpi
Variant
Arch
Version
DPI
88
November 2, 2025
PROTO - circuit simulator
1.43.0
(88)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: f86e27f6dad4f79da2a0b79454160990078b83e7
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.mdpi
Size: 28.19 MB
What's New:
> Thank you for your support and for completing the PROTO survey! We've gathered a ton of new ideas.
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
arm64-v8a
Android 6.0+
nodpi
88
November 2, 2025
PROTO - circuit simulator
1.43.0
(88)
Requires Android: Android 6.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 5bbe4b8067c10e3ab7c9232d47dfc8cc4df6b819
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.armeabi_v7a, config.xhdpi
Size: 19.72 MB
What's New:
> Thank you for your support and for completing the PROTO survey! We've gathered a ton of new ideas.
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
armeabi-v7a
Android 6.0+
nodpi
88
November 2, 2025
PROTO - circuit simulator
1.43.0
(88)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: f32ab7a19dc434c6a7fce325e8dd836e16992fb4
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxxhdpi
Size: 22.7 MB
What's New:
> Thank you for your support and for completing the PROTO survey! We've gathered a ton of new ideas.
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
arm64-v8a
Android 6.0+
nodpi
88
November 3, 2025
PROTO - circuit simulator
1.43.0
(88)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 2fae6712a1a52f624b9ddca62dd7cb6ba45eeb94
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xhdpi
Size: 22.69 MB
What's New:
> Thank you for your support and for completing the PROTO survey! We've gathered a ton of new ideas.
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
You can check out the survey results on our website (BLOG section).
> We have decided to make the themes and CMOS component [CD 4019] available for free! Enjoy!
arm64-v8a
Android 6.0+
nodpi
Variant
Arch
Version
DPI
87
October 14, 2025
PROTO - circuit simulator
1.42.0
(87)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: b510520bfa5e951a20ec22e9fbbad3b87bc2dbab
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.mdpi
Size: 27.03 MB
What's New:
> [CMOS PACK] New component - 4093 - quad 2-input Schmitt-trigger NAND gate
> [CMOS PACK][TTL PACK] Add datasheets for all components
> [CMOS PACK][TTL PACK] Add datasheets for all components
arm64-v8a
Android 6.0+
nodpi
87
October 14, 2025
PROTO - circuit simulator
1.42.0
(87)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 78ea7793eb53161186d0db489d9bfcf1e7d5d848
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxxhdpi
Size: 27.08 MB
What's New:
> [CMOS PACK] New component - 4093 - quad 2-input Schmitt-trigger NAND gate
> [CMOS PACK][TTL PACK] Add datasheets for all components
> [CMOS PACK][TTL PACK] Add datasheets for all components
arm64-v8a
Android 6.0+
nodpi
87
October 15, 2025
PROTO - circuit simulator
1.42.0
(87)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: a2297f27331b214a9b14e9684965e3e9848cebbd
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxhdpi
Size: 21.53 MB
What's New:
> [CMOS PACK] New component - 4093 - quad 2-input Schmitt-trigger NAND gate
> [CMOS PACK][TTL PACK] Add datasheets for all components
> [CMOS PACK][TTL PACK] Add datasheets for all components
arm64-v8a
Android 6.0+
nodpi
Variant
Arch
Version
DPI
86
September 23, 2025
PROTO - circuit simulator
1.41.0
(86)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: bcabd329d95ac7c4761741312f587201b1b58f70
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxhdpi
Size: 24.49 MB
What's New:
> [DIGITAL PACK] Add RESET and SET terminals in DFlipFlop component
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
arm64-v8a
Android 6.0+
nodpi
86
September 24, 2025
PROTO - circuit simulator
1.41.0
(86)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 3dbba96f738d90dccaf6fa37bf779e9e165daf41
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.mdpi
Size: 24.45 MB
What's New:
> [DIGITAL PACK] Add RESET and SET terminals in DFlipFlop component
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
arm64-v8a
Android 6.0+
nodpi
86
September 24, 2025
PROTO - circuit simulator
1.41.0
(86)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 27c2f058aeb695392d9292fc8ff86c9f6b849c7d
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxhdpi
Size: 18.95 MB
What's New:
> [DIGITAL PACK] Add RESET and SET terminals in DFlipFlop component
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
arm64-v8a
Android 6.0+
nodpi
86
September 24, 2025
PROTO - circuit simulator
1.41.0
(86)
Requires Android: Android 6.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 785dfd9e4bb5e375feea7768c43805ebca704275
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.armeabi_v7a, config.xhdpi
Size: 16.76 MB
What's New:
> [DIGITAL PACK] Add RESET and SET terminals in DFlipFlop component
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
armeabi-v7a
Android 6.0+
nodpi
86
September 24, 2025
PROTO - circuit simulator
1.41.0
(86)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 34e4d74d710ec05074eff26549d73cec9b21c5d2
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xhdpi
Size: 18.94 MB
What's New:
> [DIGITAL PACK] Add RESET and SET terminals in DFlipFlop component
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
arm64-v8a
Android 6.0+
nodpi
86
October 12, 2025
PROTO - circuit simulator
1.41.0
(86)
Requires Android: Android 6.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 5ec0228571cebb526b6d1a1046f857fad811f416
Base APK: com.proto.circuitsimulator.apk
Split APKs: config.arm64_v8a, config.xxxhdpi
Size: 18.95 MB
What's New:
> [DIGITAL PACK] Add RESET and SET terminals in DFlipFlop component
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
> Add ability to change voltage threshold (Vth or Vgs) in Mosfet component
> [TTL PACK] New components:
> 7424 - quad 2-input Schmitt-trigger NAND gate
> 7451 - dual AND-OR-Invert (AOI) gates
> [CMOS PACK] New components:
> 4013 - dual D-type flip-flop
> 4043 - quad 3-state R/S latch
arm64-v8a
Android 6.0+
nodpi
More Information
Package Name:
Update Date:
2025-11-28
Latest Version:
1.44.0
Need Update:
Available on:
Requirements:
Android 6.0+
Report:
Safe to Download
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