# MemoryAI vs Zettelkasten

The clearest difference is in-app purchases: MemoryAI at none against Zettelkasten's 2. MemoryAI also leads on update cadence (every 3 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Zettelkasten sells 2 in-app purchases, starting at $9.99 per 7 days. MemoryAI asks for nothing beyond the download.

MemoryAI ships an update every 3 days, Zettelkasten monthly. The most recent releases landed on September 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | MemoryAI | Zettelkasten |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 182 MB | 6 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Alessandro Facchini](https://appshunter.io/developer/635653083) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### MemoryAI

[App page](https://appshunter.io/ios/app/memoryai-private-assistant/id6758719586)

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

**In-app purchases:** none


### Zettelkasten

[App page](https://appshunter.io/ios/app/zettelkasten-notes-graph/id6771281468)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is MemoryAI free?

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

### Is Zettelkasten free?

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

### Do MemoryAI or Zettelkasten have ads?

Neither MemoryAI nor Zettelkasten shows ads.

### Which is updated more often, MemoryAI or Zettelkasten?

MemoryAI ships an update every 3 days, and Zettelkasten monthly. Most recently, MemoryAI was updated on September 1, 2026 and Zettelkasten on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*