# Expacer vs Biology AI

The clearest difference is in-app purchases: Expacer at none against Biology AI's 2. Expacer also leads on iOS requirement (13.0 vs 18.6). On price there is nothing between them.

Both are free to download. Biology AI sells 2 in-app purchases, starting at $3.99 per 7 days. Expacer asks for nothing beyond the download.

## The numbers

| Metric | Expacer | Biology AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 5 months |
| Size | 26 MB | 19 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 12+ |
| Developer | [Acelera Educacao Empreendedora Ltda](https://appshunter.io/developer/1674281759) | [Patrick van der Ploeg](https://appshunter.io/developer/1789764470) |

## What reviewers say

### Expacer

[App page](https://appshunter.io/ios/app/expacer/id6445855985)

**In-app purchases:** none


### Biology AI

[App page](https://appshunter.io/ios/app/biology-ai-study-scanner/id6754972384)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biology Helper Weekly | $3.99 | per 7 days |
| Biology Helper Annual | $29.99 | per year |


## Frequently asked questions

### Is Expacer free?

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

### Is Biology AI free?

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

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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.*