The best apps to learn electronics on your iPhone, from Ohm's law to circuits
Electronics is easier when you can see what a circuit does. Some apps give you short lessons, some let you run a circuit, and some are reference tools for people who already know the basics.
Knowverse is first for beginners who want the ideas explained in order, and it has no circuit builder. Ohmie and VoltLab are the places to try circuits, and the last two are for work.
Knowverse is our own app. We rank it first for this need and explain why. Details about the other apps come from their App Store listings, checked on 2026-11-08.
We read each App Store listing and compared how clearly it teaches voltage, current, resistance and Ohm's law, if you can try circuits, and who the app is for. Apps built for learners rank above toolboxes made for working engineers.
1
Knowverse - Learn in minutes
Thomas Rossi Mel · Free download · New app, no ratings yet
Best if you want electronics explained in order.
Electronics is one of Knowverse's 17 subject categories. Each lesson explains one idea with guided visual flows and interactive reveal cards. Flashcards, knowledge-check quizzes and practice exercises then ask you to recall it, and ideas come back over time. It is free to download on iPhone and iPad, with daily streaks. There is no circuit builder.
Good
One idea per lesson, with visual flows
Flashcards, quizzes and exercises in every course
Daily streaks
Less good
No hands-on circuit building
New app with no ratings yet, English only, iPhone and iPad only
OHMIE LLC · Free download · paid plan in listing · 4.5 ★ (350 ratings)
Best if you learn by solving short circuit challenges.
Ohmie teaches electronics in short game-like lessons that you solve instead of read. There are live circuit sims where you stack battery cells and dim an LED, schematics you build by dragging components, and resistor colour bands to decode. Missed questions return in Practice. Paths run from Ohm's law to transistors, logic gates and an 8-bit computer.
Good
Live circuit sims
Missed questions come back until they stick
Paths from basics to embedded systems and PCB design
Less good
The listing says everything is part of Ohmie Pro, an auto-renewing subscription
Best for: Practice with circuits in short sessions
VoltLab teaches electricity through interactive experiments that you control. AI-narrated lessons go step by step at your own pace, and quizzes come with worked solutions. The listing says it has no ads, offline access and free content, and it is aimed at students, independent learners and teachers.
Good
Interactive experiments
Quizzes with worked solutions
No ads, offline access
Less good
Covers electricity, not the wider range of electronics topics
Best for: Students learning how electricity behaves
Best as a reference for wiring and electrical work.
Electrician Handbook has theory from voltage, current, resistance and Ohm's law to protection devices, cables and electrical panels. Some topics include exercises with answers. Interactive diagrams respond as you work with their elements, and a calculator section has formulas and tables. The listing says it works offline, with no ads and no subscriptions.
Good
Theory with some self-check exercises
Interactive electrical diagrams and calculators
Works offline, no ads, no subscriptions
Less good
Written for electricians and installers, so it leans on wiring
Thomas Gruber · Free download · 4.7 ★ (1,406 ratings)
Best as a toolbox if you already work with circuits.
EE ToolKit is a toolkit for engineers, students and hobbyists. The listing counts more than 160 electronic applications, with colour code and SMD code tools, unit conversion, an audio scope and real-time simulations of example circuits. It works on iPhone and iPad and has an in-app upgrade to PRO, plus a separate PRO edition without in-app purchases.
Good
More than 160 electronic applications
Colour code and SMD code tools
Real-time simulations of example circuits
Less good
A toolbox, not a course for beginners
Best for: Hobbyists and engineers who need calculators
Which electronics app is best for a complete beginner?
Knowverse explains one idea at a time and asks you to recall it. Ohmie is the pick if you would rather solve short circuit challenges.
Can I build or test circuits in these apps?
Ohmie has live circuit sims and lets you drag components into schematics. VoltLab has interactive electricity experiments. EE ToolKit has real-time simulations of example circuits. Knowverse has no circuit builder.
Which electronics apps are free?
All five are free to download. The Ohmie listing says its lessons are part of Ohmie Pro, an auto-renewing subscription, and EE ToolKit has an in-app upgrade to PRO.
Do any of these apps work offline?
The VoltLab and Electrician Handbook listings say they work offline. The others do not mention it.
Start with Knowverse for the ideas, then try Ohmie or VoltLab when you want to run circuits. Keep Electrician Handbook or EE ToolKit for reference once the basics are clear.
Sources: Apple App Store listings, checked 2026-11-08. Prices, ratings and features come from each app’s App Store listing on that date and can change.
