# Cognito vs A

The clearest difference is in-app purchases: Cognito at none against A's 3. A's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. A sells 3 in-app purchases, starting at $3.99 per month. Cognito asks for nothing beyond the download.

## The numbers

| Metric | Cognito | A |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Size | 51 MB | 7 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Adrian Ponce](https://appshunter.io/developer/1895413004) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### Cognito

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

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

**In-app purchases:** none


### A

[App page](https://appshunter.io/ios/app/a-level-sciences-revision/id6793016005)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $12.99 | per year |
| Lifetime Access | $14.99 | one-time |


## Frequently asked questions

### Is Cognito free?

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

### Is A free?

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

### Do Cognito or A have ads?

Cognito shows ads; A 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.*