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.
Download Statistics
PROTO - circuit simulator has been downloaded 3.8 million times. In the last 30 days, the app was downloaded 44 thousand times.
User Ratings
PROTO - circuit simulator is rated 4.53 out of 5 stars. The rating is based on 13 thousand ratings.
App Information
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.
Technical Requirements
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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App is great!! 2 features I would really like are a much further zooming out, and the ability to toggle all the labels for the individual components on and off at once.
★★★★☆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!
★★★★★Jose Hambalos· Jan 4, 2026
Subject: Feature Request: Circuit Copy-Paste Functionality for Proto Simulator Dear Proto Developer Team, I hope this message finds you well. I’m a regular user of the Proto electronic simulator and greatly appreciate its intuitive design for circuit creation and testing. I’d like to request the addition of a circuit copy-paste feature that allows users to select an entire circuit (or specific subcircuits) and paste it into another circuit file. This would streamline workflow efficiency
★★★★☆Michael McPherson· Jun 16, 2026
Very nice app. Wonderful for beginners and hobbyists. I really enjoy it. Only a few things I would like for you to add. 1: variable capacitor. 2: loudspeaker 3: the ability to cut/copy and paste circuits rather than having to rebuild it from scratch.
★☆☆☆☆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
★☆☆☆☆fiko mysic· Aug 12, 2026
The controls are a pain to use, the undo button kreps moving around and only works for half of the time, and the oscilloscope feature is atrocious in the free version it can only display one thing at a time and you can't lock either of the two axes
★★☆☆☆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
This app is not ranked
Technologies used by PROTO - circuit simulator
9 permissions·21 libraries
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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
the same time period. Subscriptions can be cancelled at any time before the renewal.
