# Physics Lab AR vs Ai作文批改

The clearest difference is ratings volume: Physics Lab AR at 1.8K against Ai作文批改's 1. Ai作文批改's advantage is update cadence (every 2 weeks vs every 2 months) and rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Physics Lab AR sells 7 in-app purchases, starting at $1.49 per month and Ai作文批改 sells 7 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Ai作文批改 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Physics Lab AR has 1.8K ratings behind it against 1, so its average is the more settled of the two.

Physics Lab AR ships an update every 2 months, Ai作文批改 every 2 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Physics Lab AR | Ai作文批改 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.8K ratings)](https://appshunter.io/ios/app/physics-lab-ar/id1298984261/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai/id6450750689/reviews)** |
| Number of ratings | **1.8K** | 1 |
| Positive reviews | 47.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 177 MB | 47 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Turtle Sim LLC](https://appshunter.io/developer/1568741108) | [一齐 吴](https://appshunter.io/developer/1447496566) |

## What reviewers say

### Physics Lab AR

[App page](https://appshunter.io/ios/app/physics-lab-ar/id1298984261)

Explore physics through interactive virtual experiments and augmented reality. Build and test electrical circuits with over 100 components, visualize electromagnetic fields, and even design your own galaxy. Ideal for students, teachers, and curious minds of all ages.

**Highlights:** Virtual lab with AR mode, Build 3D electric circuits, 100+ circuit components, Precise scientific calculations, Electromagnetic field visualization, Design custom galaxies

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Component Subscription | $1.49 | per month |
| 60 Diamonds | $0.99 | one-time |
| 10 Diamonds | $0.99 | one-time |
| 120 Diamonds | $1.99 | one-time |
| 300 Diamonds | $4.99 | one-time |
| 680 Diamonds | $9.99 | one-time |
| 1280  Diamonds | $19.99 | one-time |

**What reviewers like**

- 👍 Nice app
- 🚀 Awesome app
- 💡 Good app idea
- 👍 Helpful for learning
- 👍 Useful for teachers

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Unstable app
- 🐛 Buggy app
- 🐛 App doesn't work
- 🔧 Needs improvements

**Reported bugs**

- App crashes when opening experiments or circuits
- Wires don't attach properly
- Objects fall through the table
- Camera position issues
- App freezes or becomes unresponsive

**Requested features**

- Add more components like transistors and potentiometers
- Improve camera controls and view options
- Implement saving and loading of circuits
- Add more tutorials and explanations
- Support for Vietnamese and other languages


### Ai作文批改

[App page](https://appshunter.io/ios/app/ai/id6450750689)

This app uses AI to automatically evaluate and improve student essays. It provides detailed feedback on grammar, structure, and logic, offering suggestions for enhancement. Users can also access a wealth of writing resources to boost their skills.

**Highlights:** AI-powered essay evaluation, Grammar and spelling correction, Logic and structure analysis, Personalized improvement suggestions, Rich writing resources, User-friendly interface, Offline usage

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| 按月订阅会员（教师版） | $4.99 | per month |
| AI作文批改年度会员 | $14.99 | per year |
| AI作文批改会员（高级版） | $24.99 | per month |
| Annual subscription | $29.99 | per year |
| 500体力值 | $7.99 | one-time |
| 1000体力值 | $14.99 | one-time |


## Frequently asked questions

### Is Physics Lab AR free?

Physics Lab AR is free to download, with in-app purchases available.

### Is Ai作文批改 free?

Ai作文批改 is free to download, with in-app purchases available.

### Which has better reviews, Physics Lab AR or Ai作文批改?

Ai作文批改 is rated higher. Physics Lab AR averages 4.7 out of 5 from 1.8K ratings, while Ai作文批改 averages 5.0 from 1 ratings.

### Do Physics Lab AR or Ai作文批改 have ads?

Neither Physics Lab AR nor Ai作文批改 shows ads.

### Which is updated more often, Physics Lab AR or Ai作文批改?

Physics Lab AR ships an update every 2 months, and Ai作文批改 every 2 weeks. Most recently, Physics Lab AR was updated on October 14, 2026 and Ai作文批改 on October 4, 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.*