# BrainDen vs Synapsi

The clearest difference is in-app purchases: Synapsi at none against BrainDen's 3. Synapsi also leads on update cadence (daily vs monthly). BrainDen's advantage is iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. BrainDen sells 3 in-app purchases, starting at $19.99 per month. Synapsi asks for nothing beyond the download.

BrainDen ships an update monthly, Synapsi daily. The most recent releases landed on September 25, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | BrainDen | Synapsi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Size | 49 MB | 45 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ogbemudia Terry Osayawe](https://appshunter.io/developer/1678791059) | [Khoa Tran](https://appshunter.io/developer/1523512472) |

## What reviewers say

### 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 |


### Synapsi

[App page](https://appshunter.io/ios/app/synapsi-ai-study-notes/id6780159251)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BrainDen free?

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

### Is Synapsi free?

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

### Do BrainDen or Synapsi have ads?

Neither BrainDen nor Synapsi shows ads.

### Which is updated more often, BrainDen or Synapsi?

BrainDen ships an update monthly, and Synapsi daily. Most recently, BrainDen was updated on September 25, 2026 and Synapsi on September 29, 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.*