PROTO - circuit simulator

PROTO - circuit simulator

Build, simulate and learn about electronic circuits with PROTO circuit simulator

App info


1.43.0
October 30, 2025
Android 5.0+
Everyone
Get PROTO - circuit simulator for Free on Google Play

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App description


Android App Analysis and Review: PROTO - circuit simulator, Developed by PROTO. Listed in Education Category. Current Version Is 1.43.0, Updated On 30/10/2025 . According to users reviews on Google Play: PROTO - circuit simulator. Achieved Over 3 million Installs. PROTO - circuit simulator Currently Has 12 thousand Reviews, Average Rating 4.6 Stars

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
We are currently offering version 1.43.0. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

What's New


> Thank you for your support and for completing the PROTO survey! We've gathered a ton of new ideas.\n\nYou 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!

Rate and review on Google Play store


4.6
12,160 total
5 75.4
4 10.9
3 9.9
2 1.9
1 1.9

Total number of ratings

Total number of active users rated for: PROTO - circuit simulator

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

user
Thomas White

I use it almost every day. Works great. I paid for the full app and don't regret it. Word to the wise- dont obsess over circuits. There is more to life than electronics! lol Suggestions for the devs: I would like to see my saved circuits appear across all my devices and would love a feature that would let me capture or scan an image of a schematic and copy it into Proto. More parameters for discrete components would be useful as well. thanks to the devs. keep up the good work.

user
Leopy Periz

A bit more stable than EveryCircuit, but not by much. Uninstalling because after a circuit reported "unable to solve", no matter what I did I could never revert back to when it worked. A lot of time wasted. Also, the lack of wire autorouting and the precision with which you need to select wires and components is extremely frustrating. Also, why can't I connect a wire to another one, unless there is already a junction?!

user
Brendon Steenkamp

Would give it a 5, but there is minimal support and a community page with shared circuits would be a great addition to the app for users who have bought some add-ons. And for some or other reason when I select to change a parameter of a component, it zooms quite deep into the circuit, which annoys me because when I zoom out again I move the selected component. It would be fine if it does not do the zooming at all

user
Caleb Maseman

I love this app. I've been using the free version for a long time now. And it is perfect for my needs. I have gotten to a point now that I'm going to be buying the paid version because I want to build more and need a larger supply of ic's to play with lol. Definitely a good app for the people who are interested in electronics and or electrical engineering.

user
George Broughton

The user interface feels a little clunky to use. long holding something should allow you to drag it. It's great for learning electronics, but the lack of frequency control for AC supplies and lack of AC components other than inductors and non polarized capacitors really has me wanting more. When i train guys in the workplace i really rely on visual aids to show people what's happening inside wires when data or power is being sent somewhere. It just lacks important components to be of use.

user
Richard Walker

This is a very uniquely useful and approachable analog circuit simulator, with some flaws. Not being able to copy circuit patterns makes working any moderately complex circuit extremely slow. Placing wire nodes that cannot be moved is a hindrance. I thought that despite this, it was worth paying for the add-on package to support the development and gain access to the IC systems that would be most useful to me. After paying for the add-on package, however, none of it shows up.

user
Dodge This

This app has really helped me in circuit analysis, electrical systems, and analog. Just wish there was a way to add our own components, such as a n-channel JFET instead of a MOSFET. It would also be nice to have a variable DC or AC source and the ability to add in an oscilloscope or other devices.

user
RikxianELE 309

Good enough i guess... It is full of stupid bugs though! 1 is where it wont properly calculate values. 2 When i had an accidental short circuit which blew a fuse and after i removed the short, the fuse still keeps blowing. same goes for when i accidentally shorted a capacitor and it wont stop complaining 'shorted capacitor X' 'fuse blew, click edit to fix' 'cant solve circuit' so such stupid nonesense bugs and not much other components in the extension packs so its not the best