PROTO - circuit simulator 1.37.0

PROTO – Freeware – Android
out of 10818 votes

If you are in search of tools like Multisim, SPICE, LTspice, Proteus, or Altium, PROTO is an exceptional real-time electronic circuit simulator that offers a wide range of features and capabilities. With PROTO, you have the ability to set up circuits with various components and simulate their behavior.

During the simulation process, you can easily monitor voltages, currents, and other variables. PROTO also provides a multi-channel oscilloscope feature that allows you to analyze signals and fine-tune your circuit in real-time. Additionally, PROTO can be utilized as a logic circuit simulator, enabling digital electronic analysis.

Some notable features of PROTO include:

Animations of voltage values and current flows
Adjustment of circuit parameters such as voltage, current, etc.
A four-channel oscilloscope for signal monitoring
A single play/pause button for simulation control
The ability to copy electronic components within a circuit
Access to examples of electronic circuits within the app for learning purposes
The option to share circuits with friends
A choice of different themes including Dark, Light, Ocean, and Solarized
The ability to export circuits as PNG, JPG, or PDF files

PROTO provides an extensive range of components to be used within circuits:

Voltage sources such as DC, AC, Square, Triangle, Sawtooth, Pulse, and Noise
A current source
Resistors
Potentiometers
Capacitors (including polarized capacitors)
Inductors
Transformers
Different types of diodes (rectifying diode, LED, Zener, Schottky)
Various transistors (NPN, PNP, N and P channel Mosfet)
Switches including SPST and Relay
Bulbs
Operational amplifiers
The Timer 555 (NE555)
Different digital gates (AND, NAND, OR, XOR, NOR, NXOR, Inverter)
A voltmeter and an ammeter
A fuse
A photoresistor (which utilizes the phone's light sensor)
Analog-to-digital converter (ADC)
An accelerometer (which utilizes the phone's accelerometer sensor)
An FM source
Logic inputs and outputs
The Memristor component
A probe
Voltage rails

Furthermore, PROTO offers several additional packs to enhance its functionality:

The Analog Pack includes components such as a Tunnel diode, Varactor, NTC Thermistor, Center-tapped transformer, Schmitt trigger, Schmitt trigger (inverting), Solar cell, TRIAC, DIAC, Thyristor, Triode, Darlington NPN, Darlington PNP, and Analog SPST/SPDT switches.

The Digital Pack offers components like an 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), and an Optocoupler.

The Misc Pack includes a 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 display, Diode bridge, Crystal, Voltage regulators (78xx family), TL431, Buzzer, and a Frequency meter.

Lastly, the JavaScript Pack offers the ability to write code within PROTO using a JavaScript interpreter (ES2020 class). This pack grants access to IC inputs and outputs in code and allows the user to create four custom ICs.

There are also packs dedicated to specific types of electronic components such as the 7400 TTL Pack, which includes various TTL ICs like the hex inverter (7404), triple 3-input NAND Gate (7410), hex Schmitt-trigger inverter (7414), quadruple 2-input OR gate (7432), and more. Additionally, there is the 4000 CMOS Pack that offers dual 3-input NOR gate and inverter (4000), quad 2-input NOR gate (4001), dual 4-input NOR gate(4002), quad 2-input NAND gate(4011), quad bilateral switch(4016), 5-stage Johnson decade counter(4017), triple 3-input NAND gate(4023), and others.

Lastly, PROTO provides a Sensors pack that includes components such as Pressure sensors, Gyroscopes, Light sensors, Magnetic field sensors, Proximity sensors, Temperature sensors, and Humidity sensors.

To report any issues or make component requests for PROTO, you can visit https://github.com/Proto-App/Proto-Android/issues.

Overview

PROTO - circuit simulator is a Freeware software in the category Education developed by PROTO.

The latest version of PROTO - circuit simulator is 1.37.0, released on 04/11/2025. It was initially added to our database on 10/28/2023.

PROTO - circuit simulator runs on the following operating systems: Android.

Users of PROTO - circuit simulator gave it a rating of 4 out of 5 stars.

Pros

Innovative user interface with real-time collaboration
Ability to simulate complex circuits accurately
Intuitive drag-and-drop functionality for easy circuit designing
Support for mixed-signal simulation (analog, digital, and mixed circuits)
Includes a large library of components for circuit designing
Interactive visualization of simulation results for better understanding

Cons

Steep learning curve for beginners due to the complexity of features
Free version has limitations on the number of components and simulations
Not suitable for extremely large or complex circuits
Requires stable internet connection for real-time collaboration functionality

FAQ

What is PROTO?

PROTO is a circuit simulator that allows users to design, simulate, and analyze electronic circuits.

How does PROTO work?

PROTO uses a graphical interface to let users create circuit schematics, which it then simulates using numerical methods to analyze circuit behavior.

Is PROTO suitable for beginners?

Yes, PROTO is user-friendly and provides tutorials and resources to help beginners start designing circuits.

Can PROTO simulate both analog and digital circuits?

Yes, PROTO is capable of simulating a wide range of both analog and digital circuits.

Is there a free version of PROTO available?

PROTO offers a free trial version, but full features require a paid license.

What operating systems does PROTO support?

PROTO is compatible with Windows, macOS, and Linux operating systems.

Do I need any prior electronics knowledge to use PROTO?

While some basic understanding of electronics will help, PROTO provides ample documentation and examples for users at all levels.

Can I export my simulations from PROTO?

Yes, you can export your circuit designs and simulation results in various formats for sharing or further analysis.

What types of components are available in PROTO?

PROTO includes a comprehensive library of components such as resistors, capacitors, inductors, transistors, and more.

Is customer support available for PROTO users?

Yes, PROTO provides customer support through email and an online community forum for troubleshooting and user questions.

Screenshots (Click to view larger)

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