Electro Sim

Circuit Simulator

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

Build a circuit. See current flow. Understand how it works. Electro Sim turns electronics into something you can explore on your iPhone or iPad. Place components, connect wires, and run a simulation to see how your circuit responds. Whether you are learning the basics, preparing a classroom demonstration, or testing an idea, start with a working example or build your own. BUILD ON A CANVAS OR A BREADBOARD Create schematic circuits with drag-and-drop components and flexible wiring, or try a virtual breadboard with components and jumper wires. Zoom in to make connections, rotate parts, and use undo and redo as you experiment. SEE WHAT CHANGES WHEN YOU CHANGE THE CIRCUIT Follow animated current flow, inspect voltage and current readings, and use a virtual multimeter to explore circuit behavior. Adjust component values, toggle switches, or advance the simulation one step at a time to connect cause and effect. LEARN THROUGH WORKING EXAMPLES Explore LED circuits, capacitor charging, logic gates, adders, counters, seven-segment displays, and traffic lights. Selected examples include guided steps that help you investigate the circuit and check your understanding. FIND THE PARTS YOU NEED Browse a searchable component library with resistors, capacitors, inductors, diodes, LEDs, transistors, switches, buzzers, logic gates, and signal sources. Component descriptions and pin information help you decide what to use and how to connect it. TURN CIRCUIT BLOCKS INTO REUSABLE MODULES With Pro, create custom components from circuit blocks, define their pins, and reuse them in new projects. Build up a collection of modules as your ideas grow. Custom component creation and use require an active Pro subscription. SAVE AND SHARE YOUR WORK Save projects to revisit later, exchange circuit files in JSON format, and export circuit snapshots or PDF reports with readings and notes for learning and discussion. Designed for iPhone and iPad, with light and dark appearances and English, Simplified Chinese, and Traditional Chinese interfaces. Start with one LED, then see where your curiosity takes you.

Ratings & Reviews

  • This app has not received enough ratings or reviews to display an overview.

Added breadboard support and more examples, introduced current-sensitive flow visualization, and fixed known issues.

Version 1.1.0

The developer, 剑龙 刘, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Provider
    剑龙 刘
    Size
    19.9 MB
    Category
    Education
    Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.3 or later.
    Languages
    English and 2 more
    • English, Simplified Chinese, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © jianlong liu
  • Developer Website
  • Privacy Policy

    • More by 剑龙 刘

    You Might Also Like