# OhmQuest: Circuit Lab — Build, Test & Learn Circuits

> Build, Test & Learn Circuits (iPhone/iPad app by 建超 崔.)

- Source: https://appshunter.io/ios/app/ohmquest-circuit-lab/id6797415284 (this page in markdown: same URL + `.md`)
- Developer: [建超 崔](https://appshunter.io/developer/1411749208)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 21 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China)
- Released: 2026-08-17
- Data updated: 2026-09-14
- User reviews in markdown: https://appshunter.io/ios/app/ohmquest-circuit-lab/id6797415284/reviews.md

## What is OhmQuest?

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/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| OhmQuest Full Access | $1.99 | one-time |



## Version history (last 3 releases)

### 2.1 — 2026-09-05

Improved the in-app purchase experience

Improved circuit building and wiring

### 2.0 — 2026-08-26

This update improves experiment settings and physics models:

Household circuit equipment now uses fixed 220 V teaching specifications to prevent accidental low-voltage settings.

Refined valid ranges for component ratings, resistance, meter ranges, and protection thresholds in Free Lab.

Corrected the teaching logic for energy meters, leakage protection, grounding alerts, and test pens.

Improved magnetic field, electromagnetic induction, and hand-generator behavior and data display.

Enhanced labels and wiring display for multi-terminal components.

### 1.0 — 2026-08-17

No release notes.

## More apps by 建超 崔

- [斗栱Pro](https://appshunter.io/ios/app/pro/id1459741510)
- [锚点记忆 - 个人出行标记与决策工具](https://appshunter.io/ios/app/id6780001506)
- [Cubilo: Spatial Thinking](https://appshunter.io/ios/app/cubilo-spatial-thinking/id6792619988)

All apps by 建超 崔: https://appshunter.io/developer/1411749208

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-14.*