# KKU Library vs Physics AI Solver +

The clearest difference is in-app purchases: KKU Library at none against Physics AI Solver +'s 2. KKU Library also leads on iOS requirement (8.3 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Physics AI Solver + sells 2 in-app purchases, starting at $3.99 per 7 days. KKU Library asks for nothing beyond the download.

## The numbers

| Metric | KKU Library | Physics AI Solver + |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 8 MB | 10 MB |
| Requires iOS | **8.3** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Khon Kaen University](https://appshunter.io/developer/592053529) | [ENGINES STUDIO LAB](https://appshunter.io/developer/1686902830) |

## What reviewers say

### KKU Library

[App page](https://appshunter.io/ios/app/kku-library/id1016217918)

**Features:** macOS Compatibility

**In-app purchases:** none


### Physics AI Solver +

[App page](https://appshunter.io/ios/app/physics-ai-solver-plus/id6753230728)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access for 1 week | $3.99 | per 7 days |
| Full access for 1 year | $24.99 | per year |


## Frequently asked questions

### Is KKU Library free?

KKU Library is free to download, with no in-app purchases.

### Is Physics AI Solver + free?

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

### Do KKU Library or Physics AI Solver + have ads?

Neither KKU Library nor Physics AI Solver + shows ads.

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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.*