# crewmath. vs T3 Books AI

The clearest difference is ads: T3 Books AI at none against crewmath.'s shown. T3 Books AI also leads on iOS requirement (14.0.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | crewmath. | T3 Books AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Size | 3 MB | 28 MB |
| Requires iOS | 17.0 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Breydon Verryt-Reid](https://appshunter.io/developer/1671484251) | [T3 Aviation Academy LLC](https://appshunter.io/developer/1541514692) |

## What reviewers say

### crewmath.

[App page](https://appshunter.io/ios/app/crewmath/id1671484249)

**Features:** macOS Compatibility

**In-app purchases:** none


### T3 Books AI

[App page](https://appshunter.io/ios/app/t3-books-ai/id6733243186)

**In-app purchases:** none


## Frequently asked questions

### Is crewmath. free?

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

### Is T3 Books AI free?

T3 Books AI is free to download, with no in-app purchases.

### Do crewmath. or T3 Books AI have ads?

crewmath. shows ads; T3 Books AI does not.

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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.*