# 9Solver AI vs Physics Ai

The clearest difference is update cadence: Physics Ai at every 3 days against 9Solver AI's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 9Solver AI sells 7 in-app purchases, starting at $5.99 per 7 days and Physics Ai sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

9Solver AI ships an update every 10 days, Physics Ai every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | 9Solver AI | Physics Ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 110 MB | 65 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Le Hoang Thi Ngoc](https://appshunter.io/developer/1458862040) | [Codememory LLC](https://appshunter.io/developer/1474903109) |

## What reviewers say

### 9Solver AI

[App page](https://appshunter.io/ios/app/9solver-ai-homework-helper/id6758931755)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $5.99 | per 7 days |
| Weekly | $5.99 | per 7 days |
| Monthly | $29.99 | per month |
| Monthly | $29.99 | per month |
| Yearly | $69.99 | per year |
| Yearly | $99.99 | per year |
| Premium | $99.99 | per year |


### Physics Ai

[App page](https://appshunter.io/ios/app/physics-ai-study-and-solve/id6758949899)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Yearly | $29.99 | per year |
| Physics Ai Pro Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is 9Solver AI free?

9Solver AI is free to download, with in-app purchases available.

### Is Physics Ai free?

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

### Do 9Solver AI or Physics Ai have ads?

Neither 9Solver AI nor Physics Ai shows ads.

### Which is updated more often, 9Solver AI or Physics Ai?

9Solver AI ships an update every 10 days, and Physics Ai every 3 days. Most recently, 9Solver AI was updated on October 24, 2026 and Physics Ai on October 24, 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.*