Build, simulate and learn about electronic circuits with PROTO circuit simulator
PROTO is a real-time circuit simulator that lets you build, simulate, and learn electronics with a rich component library and a four-channel oscilloscope. It supports real-time parameter tuning, circuit export, and sharing, making it a strong educational tool for Arduino, Raspberry Pi, and ESP32 projects. Not ranked in any top list, PROTO has garnered a broad audience with a 4.63 average rating from 12,294 reviews and over 1,000,000+ total downloads.
Pros & Cons
Real-time simulations with a four-channel oscilloscope
Extensive component library across Analog, Digital, and Misc packs
Export and share circuits as PNG/JPG/PDF and print/workspace export
Supports Arduino, Raspberry Pi, and ESP32 workflows for hands-on projects
Less emphasis on calculator-style features and pinout guides compared to some competitors
Not ranked in any top list, which may affect discoverability for some users
Some competitors foreground broader design tools (e.g., design-oriented electronics features) that PROTO does not explicitly spotlight
About PROTO - circuit simulator
PROTO - circuit simulator is an education app developed by PROTO.
How many times has PROTO - circuit simulator been downloaded?
PROTO - circuit simulator has been downloaded 3.7 million times. In the last 30 days, the app was downloaded 41 thousand times.
What is the rating of PROTO - circuit simulator?
PROTO - circuit simulator is rated 4.56 out of 5 stars, based on 13 thousand ratings.
Is PROTO - circuit simulator free?
PROTO - circuit simulator is free to download. The APK download size is 19.34 MB. The latest version available is 1.50.0. The last update was on August 8, 2026.
What are the requirements for PROTO - circuit simulator?
The app has a content rating of Everyone. The app has been available on Google Play May 2021.
Description
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
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The best circuit sim I have played. A few things it needs: multiple types of transistor, buzzer able to play a recorded sound, adding more circuit examples. Would recommend to other people. Another thing that would be cool is that the oscillator can make sound.
★★★★★Dodge This· Feb 4, 2026
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 an n-channel JFET instead of a MOS FET. It would also be nice to have a variable DC or AC source and the ability to add in an oscilloscope or other devices. Another very useful tool would be transient analysis. Please do that!
★★★★☆Jose Hambalos· Jul 13, 2026
Hello Proto Electronic Simulator Team, I can't pay in your app using DITO Telco Money. When I select payment, DITO Pay doesn't show up / it's not accepted. Country: Philippines Payment Method: DITO Pay / DITO Telco Money Device: Android Can you please add DITO Pay as a payment option? Many Filipino users use DITO now. Thank you!
★★★★★Green Light Zone· Dec 14, 2025
Good app, has most stuff you need. I know your to-do list is huge, but if you get a chance, could you please add custom integrated circuits, i.e. sub circuits just for logic simulation. That would probably provide me with so much value I would definitely buy the full version.
★☆☆☆☆Urjana Manoj Kumar· Feb 24, 2026
Good but.you need to build the OSCILLOSCOPE(CRO) in the available components section.hope u will do it soon.
★☆☆☆☆Khan Khalid· Mar 4, 2026
Extremely confusing interface and no lock layout options schematic become unstoppable even while pressing a switch
★☆☆☆☆Jagannath Baral· Mar 6, 2026
There is no wire to even connect and the wire is only is in example what nonsense is this you guys are trash like this 💩💩
★★☆☆☆John Latsch· Feb 23, 2026
It shows a capacitor across a circuit as a short instead of a filter
★★☆☆☆Hossein Hk5531· Feb 14, 2026
This program is good but have a littel problems such as a conection tow device and ... in order to need the refresh
Google Play Rankings for PROTO - circuit simulator
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Trust & Safety: Safety review: The app requests standard network access (INTERNET, ACCESS_NETWORK_STATE), ad identifiers (AD_ID) and in-app billing, along with RECORD_AUDIO and WAKE_LOCK. No location permissions are requested. It relies on Firebase and other libraries, and presents a transparent set of permissions; users should review the privacy policy and consent for data usage as with most freemium educational apps.
Each subscription will automatically renew 3 days before the expiration date for
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