# Biology AI vs Cognito

The clearest difference is in-app purchases: Cognito at none against Biology AI's 2. Biology AI's advantage is ads (none vs shown) and iOS requirement (16.0 vs 18.2). On price and device support there is nothing between them.

Both are free to download. Biology AI sells 2 in-app purchases, starting at $2.99 per 7 days. Cognito asks for nothing beyond the download.

## The numbers

| Metric | Biology AI | Cognito |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Size | 6 MB | 51 MB |
| Requires iOS | **16.0** | 18.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rudenko Andrii](https://appshunter.io/developer/1858246209) | [Adrian Ponce](https://appshunter.io/developer/1895413004) |

## What reviewers say

### Biology AI

[App page](https://appshunter.io/ios/app/biology-ai-study-helper/id6761460669)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biology AI Premium | $2.99 | per 7 days |
| Biology AI Premium | $24.99 | per year |


### Cognito

[App page](https://appshunter.io/ios/app/cognito-learn-while-you-live/id6763639873)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biology AI free?

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

### Is Cognito free?

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

### Do Biology AI or Cognito have ads?

Cognito shows ads; Biology 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.*