VoltEzy is a hands-on electronics course for your phone. Short lessons explain one idea at a time, then you build it in a live circuit simulator, from your first LED to a 555 timer.
Free, no ads, and it works offline.
The course switches between short explanations and hands-on work, so you never read for long before you get to try the idea yourself.
Funda lessons
Each concept lesson covers one idea in a few short screens. Animations show charges moving, lamps lighting up and meters responding, so voltage and current make sense before any maths appears.
From the course
Build lessons
Build lessons give you a goal and a workbench. Add parts, wire them up and press play. The circuit is simulated as it runs, so closing a switch really starts the current, and the scope draws exactly what happened.
The simulation engine is the one inside VoltSim, our circuit simulator app with over 500,000 downloads on Google Play.
Fix lessons
Every fix lesson starts with a broken circuit and a symptom: a lamp that stays dark, a glow that’s too weak, a power supply that hums. You run the test, measure, work out what’s wrong and repair it. Debugging is a skill of its own, so it gets its own lessons.
From the course
Quizzes and progress
Short quizzes follow each topic, and the app keeps track of how far you’ve come, so it’s easy to pick up where you left off.
107 lessons across six sections. You start with what electricity actually is, and finish building timers, camera flashes and smooth power supplies.
What electricity is, what pushes it, and how to build, break and fix your first circuit.
Resistors, LEDs, capacitors, diodes, switches and pots. Read their markings, learn their symbols and build with them.
The workbench, feature by feature: build, tune, measure, break, repair and debug until the bench answers to you.
Series and parallel, the voltage divider and Kirchhoff’s two laws: the tools that crack any DC schematic.
Charge, timing and choosing the right part, all built and tested on the bench.
Camera flashes, smooth power, blinking timers and clean supplies for chips.
Something else on your mind? Email us at voltezy.app@gmail.com.
Yes. VoltEzy is free to download and has no ads, and right now every lesson in the course is free.
No. The first lesson starts with what electricity actually is. Each idea builds on the one before it, and the maths only arrives once you’ve seen what it describes.
No. Every build happens in the simulator on your phone. Along the way you also learn to read real parts, their markings and the safety basics, so you’re ready when you do pick up a breadboard.
Android phones running Android 7.0 or later, through Google Play. The iPhone version is coming soon to the App Store.
Yes. All the lessons are built into the app, so you can learn without a connection.
VoltSim is an open-ended circuit simulator: a blank canvas for designing whatever you like. VoltEzy is a guided course built on the same simulation engine, with lessons, goals and feedback. Start with VoltEzy if you’re learning, and use VoltSim when you want to design your own circuits.
Your progress is saved on your device. We use crash reports and basic analytics to find bugs and improve the app. We don’t show ads and we don’t sell your data. The privacy policy has the details.
“Meet electricity” is the first of 107 lessons. VoltEzy is free on Android, and the iPhone version is on its way.
