Easy to understand and fun to learn!
I’m a student learning about electronics and electrical engineering. I like how fun and easy this app makes learning.
bird_coffin
4.5 on the App Store · 267 ratings
Learn real electronics,
3 minutes a day.
Short lessons you solve by hand, with circuits that actually respond.
Free for 7 days. iPhone and iPad.
4.5
267 ratings
US App Store, Oct 18, 2026
690+
lessons · 6 subjects
Rated 4+
iPhone and iPad
[...] It’s the definitive electronics app in my opinion. [...]
Jsjdixhbsgdjdb, App Store
How Ohmie works
You don't watch electronics. You solve it.
Tap the break in the loop. Fix the fault. Watch the lamp light up — on a circuit that actually responds.
Stuck? Ask Ohmie.
Every question has a built-in explanation, plus a nudge if you need one, and signed-in subscribers can ask Ohmie follow-up questions right there on the question.
Streaks and levels that make 3 minutes stick.
Every lesson banks XP and keeps your streak alive. A Daily Charge every day — up to five questions, +15 XP.
Walk into Copper Town. Light your first LED.
Quiz-battle Watt, the practice bot — first to five wins. Sign in and challenge another inventor live, 20 seconds a question.
It starts at "what is electricity?" and ends at robot navigation.
01 · 277 lessons
Electronics
Voltage, current, capacitors, op-amps, then transistors, logic gates and a computer you build — from your first spark to an 8-bit CPU.
One track in thirteen chapters, now with AC: the wall's wave, analog signals on the scope, the transistor's 1947 breakthrough, the Logic Lab, and Inside the 8-Bit Computer, a whole computer running on your screen.
Covered chapters
- Basics
- Analysis
- Capacitors
- Diodes
- Power
- Analog
- AC
- Switches
5 more chaptersFewer chapters
- Amplifiers
- Silicon
- Logic
- Computers
- History
02 · 105 lessons
Robotics
IMUs, sensor fusion, and SLAM — how a robot figures out where it is.
Covered chapters
- Hardware
- Arms
- Control
- Navigation
03 · 106 lessons
Embedded Systems
Where code meets copper: pins, analog reads, interrupts, and the sensors that feel the world.
Covered chapters
- Chips
- Boards
- Signals
- Devices
- Computers
04 · 39 lessons
Computer Architecture
CPU, GPU, the memory ladder.
Covered chapters
- CPU
- GPU
- Memory
05 · 47 lessons
PCB Design
From breadboard to board: lay out real PCBs in OhmieCAD.
Covered chapters
- Basics
- Design
- Routing
- Production
06 · 119 lessons
Programming
One track with a Python / C++ switch: Python from zero (67 lessons), or Arduino C++ from your first blink to your own sensor lamp (52 lessons).
Covered chapters
- Python: Basics · Data · Structure · Tools · Objects
- C++: Arduino · Control · Sensing · Capstone
No prerequisites.
Start at 01 — 7 days free →
Try Ohmie free for 7 days.
7 days free, then billed yearly. You'll see the price in the app before you start. Renews automatically unless canceled in the App Store.
Everything in Ohmie
- 690+ lessons
- Live circuit benches
- Narrated lessons (English)
- Daily Charge
- Streaks and streak freezes
- Weekly leaderboard
- Ohmie World and the Arena
- OhmieCAD
- Python and C++ for Arduino
- Widgets
- 5 languages
- No ads
- Progress sync with Sign in with Apple
New in 1.6.3
What's new in 1.6.3
- Ohmie has a new voice: every narrated lesson is now read in a more natural voice, a little quicker than before.
- The Arduino Crash Course: on Explore's new Crash courses row, meet the breadboard and the board, then wire and code your first light.
- Words with diagrams: tap an underlined word in a lesson for a plain definition and an example, and most words now come with a drawn diagram.
- Op-amps for beginners: Meet the Op-Amp, Control the Signal and Build Useful Circuits, twenty-four lessons with new animations.
- Fixes from your reports: lesson benches fit the iPad in any orientation, the LED bench in "Checkpoint: control the flow" finishes as soon as your reading is right, and the flashlight, current split, push and spinning-magnet benches respond the way you'd expect.
- Halloween is here. Ohmie wears his vampire cape until November 1.
What people say on the App Store
Amazing
I wasn’t expecting much but wow! So easy to learn and understand, it is helping me a lot at work and my hobbies.
HarryChoppaMy first interactions
I was not expecting a lot but holy moly. This app will sure teach you what you need to know. [...] I was thinking not paying for the subscription but it is totally worthy.
AsiusG3112Questions, answered
Do I need any hardware or a breadboard?
No. Every circuit is simulated and playable right in the app — though builds are real enough to copy onto your desk.
Is it good for total beginners?
Yes. Ohmie starts at "What is electricity?" and builds up one short lesson at a time.
How far does it actually go?
Six subjects — Electronics, Robotics, Embedded Systems, Computer Architecture, PCB Design and Programming — take you from Ohm's law to what's happening inside a transistor, through a computer you build, then on to IMUs, sensor fusion and SLAM. It's the same short, hands-on lesson rhythm the whole way; the ideas just get bigger.
What if I get stuck on a question?
Ask Ohmie. Every question has a built-in explanation, plus a nudge if you need one, and signed-in subscribers can ask Ohmie follow-up questions right there on the question.
Is there a free version?
No — Ohmie is a paid app. Pick Yearly and the first 7 days are free; cancel before day 7 and you pay nothing. You'll see the price in the app before you start. There's no ad-supported tier.
Can I cancel anytime?
Yes. Yearly starts with a 7-day free trial — cancel before it ends and nothing is charged. Either plan can be cancelled any time in the App Store, and refunds are handled by Apple at reportaproblem.apple.com.
Your first circuit is 3 minutes away.
- 7 days free on Yearly
- Cancel anytime in the App Store
- No ads
- iPhone and iPad
Free for 7 days. iPhone and iPad.
