# Memory AI vs BrainDen

The clearest difference is update cadence: Memory AI at every 3 days against BrainDen's monthly. On price, ads, 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 BrainDen sells 3 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Memory AI ships an update every 3 days, BrainDen monthly. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Memory AI | BrainDen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 59 MB | 49 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Du Dai](https://appshunter.io/developer/1854781140) | [Ogbemudia Terry Osayawe](https://appshunter.io/developer/1678791059) |

## 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 |


### BrainDen

[App page](https://appshunter.io/ios/app/brainden-lecture-note-taker/id6757434859)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BrainDen Pro - Monthly | $19.99 | per month |
| 6-Month Pro Subscription | $49.99 | per 6 months |
| BrainDen Pro - Annual Subscription | $99.99 | per year |


## Frequently asked questions

### Is Memory AI free?

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

### Is BrainDen free?

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

### Do Memory AI or BrainDen have ads?

Neither Memory AI nor BrainDen shows ads.

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

Memory AI ships an update every 3 days, and BrainDen monthly. Most recently, Memory AI was updated on September 11, 2026 and BrainDen on September 9, 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.*