# iCircuit 3D vs School Practice Lock

The clearest difference is price: School Practice Lock at $0.99 against iCircuit 3D's $12.99. School Practice Lock also leads on review sentiment (67% vs 41%). iCircuit 3D's advantage is rating (4.1 vs 1.9) and update cadence (every 8 months vs every 50 months). On ads, in-app purchases and monetization model there is nothing between them.

iCircuit 3D costs $12.99 and School Practice Lock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iCircuit 3D holds the better App Store score, 4.1 against 1.9. That said, the two scores are not equally well evidenced: iCircuit 3D has 72 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 41% of iCircuit 3D's written reviews are positive against 67% of School Practice Lock's, so the app with the better star average is not the one people write more warmly about.

iCircuit 3D ships an update every 8 months, School Practice Lock every 50 months. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | iCircuit 3D | School Practice Lock |
| --- | --- | --- |
| Price | $12.99 | **$0.99** |
| Rating | **[4.1 (72 ratings)](https://appshunter.io/ios/app/icircuit-3d/id1539977373/reviews)** | [1.9 (10 ratings)](https://appshunter.io/ios/app/school-practice-lock/id6443682566/reviews) |
| Number of ratings | **72** | 10 |
| Positive reviews | 40.8% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 50 months |
| Monetization | Paid | Paid |
| Best chart rank | **#195** | — |
| Size | 142 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Krueger Systems, Inc.](https://appshunter.io/developer/299293363) | [Contractor Pro Software LLC](https://appshunter.io/developer/1615065297) |

## What reviewers say

### iCircuit 3D

[App page](https://appshunter.io/ios/app/icircuit-3d/id1539977373)

**Currently charting:** #195 Top Paid · Education (US App Store)

Design, build, and test electronic circuits in a realistic 3D environment. This app offers a virtual workbench with over 150 simulated parts and tools to experiment with circuits, diagnose issues, and visualize component behavior.

**Highlights:** 3D virtual workbench, Real-time circuit simulation, 150+ physically simulated parts, Realistic component behavior, Magic smoke failure simulation, Import custom 3D models, Symbolic component library

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Incredible for learning electronics
- 💡 Fantastic 3D version
- 💡 Powerful tool for prototyping
- 💡 Great concept for teaching
- 💡 Well thought out components

**What reviewers complain about**

- 🐛 Difficult to control camera
- 🐛 Hard to attach parts
- 🐛 Wheels are buggy
- 🐛 Very difficult to manipulate
- 🐛 Components flip/move easily

**Reported bugs**

- Wheels fly upwards when attached
- Crashes often
- Components flip, turn or move easily
- Wrong component added when tapping
- App freezes when creating templates

**Requested features**

- Add search function for vertical mode
- Fix buggy wheels when attaching
- Improve camera angle control
- Add option to follow moving objects
- Add option to hold objects in place


### School Practice Lock

[App page](https://appshunter.io/ios/app/school-practice-lock/id6443682566)

Practice unlocking combination locks virtually before tackling real ones. Features include setting custom combinations, a helpful guide, and augmented reality to interact with your actual lock.

**Highlights:** Set any combination, Helpful unlocking guide, AR mode for actual locks, Virtual lock practice

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iCircuit 3D free?

iCircuit 3D costs $12.99, with no in-app purchases.

### Is School Practice Lock free?

School Practice Lock costs $0.99, with no in-app purchases.

### Which has better reviews, iCircuit 3D or School Practice Lock?

iCircuit 3D is rated higher. iCircuit 3D averages 4.1 out of 5 from 72 ratings, while School Practice Lock averages 1.9 from 10 ratings.

### Do iCircuit 3D or School Practice Lock have ads?

Neither iCircuit 3D nor School Practice Lock shows ads.

### Which is updated more often, iCircuit 3D or School Practice Lock?

iCircuit 3D ships an update every 8 months, and School Practice Lock every 50 months. Most recently, iCircuit 3D was updated on November 3, 2026 and School Practice Lock on November 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*