
PROTO - circuit simulator
Build, simulate and learn about electronic circuits with PROTO circuit simulator
App info
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App description
Android App Analysis and Review: PROTO - circuit simulator, Developed by PROTO. Listed in Education Category. Current Version Is 1.39.0, Updated On 09/06/2025 . According to users reviews on Google Play: PROTO - circuit simulator. Achieved Over 3 million Installs. PROTO - circuit simulator Currently Has 11 thousand Reviews, Average Rating 4.3 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 1.39.0. 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
> New component [CMOS ADDON]: 4026 - decade counter and 7-segment display driver
> Optimized rendering by 30% with visible labels
> Try to fix JavaScript crash on Huawei MatePad T 10
> Optimized rendering by 30% with visible labels
> Try to fix JavaScript crash on Huawei MatePad T 10
Recent Comments
Arseniy Maksimov
App has a big potential but the user experience suffers. Removed it because could not connect wires together. The way of handling connections and components is not straightforward in general. I also tried to build an amplification stage with a npn-transistor and the base bias voltage was not collectly setting up. Otherwise it would be a great app with a smooth user interface.
Elliot Turner
Fairly one-dimensional. Needs a variety of ICs to be useful, like the 4000B or 7400 series in a similar way to how apps like circuit wizard have all sorts of ICs. Could also do with a setting to switch between American and European circuit symbols. Would be more convenient. But really good for a free, mobile app!
Angelo Janrei Romualdo
This app is amazing but it's missing a great feature, it's about taking a screenshot because it isn't allowed by the app. While the alternative is to screenshot it in my recent apps button but it's blurry, i hope you can fix it.
Zak Fortier
This app has potential but it needs some work. It complains improperly about shorted capacitors (make a bridge rectifier, connect an LED, put one cap in parallel, it's fine.. put 2 in parallel, now there's a short? Nonsense, this setup is common), and the simulation time step you choose changes whether the circuit even works (certain values will blow LEDs). I do like the interface, but that doesn't matter much when the basic functionality of the app isn't right.
Priyabrata Nayak
This app helps me a lot. I can find out if I will get any output by doing the calculations here. I have been doing this for many years. My friends are impressed after seeing this app. I want to share this app with them. There are only a few drawbacks. Because of the small point, sometimes I am not able to touch the point accurately or there are some other small problems. and if any other circuit is made and some extra things are added and edited then it happens once or twice when I undo it only
goober
The program is ok, I suppose. However it's extremely buggy. Tons of times I've had the program straight up not calculate sources if there's more than 2 of them. Not to mention, variating sources (such as the solar cell) work in very odd ways. If you want to try using transistors, good luck. Every time I use them it shows that there's millions of billions of giga amps traveling through them. Overall, buggy program.
William Brown (Will)
The simulation is awesome and works really well, making your own ICs would be a good addition as I find myself using loads of space to build circuits when custom ICs would be much quicker and tidier (e.g. arithmetic, or modelling real ICs for their intended use in circuits). Also points which are connected but not with wires (for tidier circuits) like a label in more advanced circuit tools. And the ability to select and move (not just delete) multiple components.
Micah Kelly
this program is amazing! by far the best circuit prototyping and learning program I've ever seen! very fun and extremely good for teaching yourself how components and circuits work! it's incredible on every level!