# Memory AI vs Cerebra

The clearest difference is ads: Memory AI at none against Cerebra's shown. Memory AI also leads on update cadence (every 3 days vs weekly). Cerebra's advantage is iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Memory AI sells 4 in-app purchases, starting at $4.99 per 7 days and Cerebra sells 6 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Memory AI ships an update every 3 days, Cerebra weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Memory AI | Cerebra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Size | 59 MB | 88 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Du Dai](https://appshunter.io/developer/1854781140) | [Rich Atitsusi](https://appshunter.io/developer/1591081544) |

## What reviewers say

### Memory AI

[App page](https://appshunter.io/ios/app/memory-ai-master-knowledge/id6755601288)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Memory AI Pro Weekly | $4.99 | per 7 days |
| Memory AI Pro Yearly Discount | $49.99 | per year |
| Memory AI Pro Yearly | $99.99 | per year |
| Memory AI Pro Yearly | $99.99 | per year |


### Cerebra

[App page](https://appshunter.io/ios/app/cerebra-ai-study-companion/id6756488236)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study Pro | $3.99 | per month |
| Study Master | $7.99 | per month |
| 25 Credits | $2.99 | one-time |
| 100 Credits | $8.99 | one-time |
| 300 Credits | $19.99 | one-time |
| 500 Credits | $29.99 | one-time |


## Frequently asked questions

### Is Memory AI free?

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

### Is Cerebra free?

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

### Do Memory AI or Cerebra have ads?

Cerebra shows ads; Memory AI does not.

### Which is updated more often, Memory AI or Cerebra?

Memory AI ships an update every 3 days, and Cerebra weekly. Most recently, Memory AI was updated on October 30, 2026 and Cerebra on October 30, 2026.

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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.*