OhmQuest: Circuit Lab
Build, Test & Learn Circuits
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
For middle school learners and circuit enthusiasts: 100 guided challenges, 200 exam-style questions, and a free-build lab—hands-on learning without live hardware.
OhmQuest turns abstract middle-school electricity into interactive buildable, runnable, observable simulation labs for students, parent-child study and electronics fans.
100 progressive challenge levels let you build circuits and observe phenomena to master current, voltage, resistance, heat and electromagnetism.
200 exam exercises require real circuit operation before answering, stopping rote memorization.
Free sandbox mode with power supplies, meters, motors and electromagnetic parts. Adjust parameters and view formulas instantly to recreate textbook circuits anytime.
No account, no ads, no data tracking; all progress saves locally. For educational use only, not professional electrical engineering. Subject to Apple’s Standard EULA.
Apple Standard EULA:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved the experiment challenge experience:
• Clearer wiring layouts and step-by-step hints for fault diagnosis.
• Improved circuit breaker status indicators and rheostat adjustment.
• Added relative magnetic field strength to magnetic experiment records.
• Enhanced visual feedback for the hand-crank generator and motor.
• Improved the sensor switch’s floating slider to reduce accidental taps.
• Improved text display across supported languages.
The developer, 建超 崔, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 建超 崔
- Size
- 21.9 MB
- Category
- Education
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Korean, Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- OhmQuest Full Access $3.99
- Copyright
- © 2026 JianChaoCui