# ZettelkastenNote vs Slatt

The clearest difference is update cadence: ZettelkastenNote at every 6 days against Slatt's every 2 weeks. Slatt's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ZettelkastenNote sells 1 one-off in-app purchase and Slatt sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ZettelkastenNote ships an update every 6 days, Slatt every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ZettelkastenNote | Slatt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/zettelkastennote/id6747979814/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 10 MB | 41 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shoetsu Kawasato](https://appshunter.io/developer/1329390999) | [Voidback, Inc.](https://appshunter.io/developer/1891926153) |

## What reviewers say

### ZettelkastenNote

[App page](https://appshunter.io/ios/app/zettelkastennote/id6747979814)

Capture and connect ideas as small cards to build a growing web of knowledge. This app offers a distraction-free interface for organizing thoughts and creating structured insights. Your data remains private, stored locally or optionally in iCloud, with no tracking or ads.

**Highlights:** Capture ideas as atomic cards, Connect related ideas, Drag & drop reordering, Local-first data design, Optional iCloud sync, Offline functionality

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZettelkastenNote Pro | $1.99 | one-time |


### Slatt

[App page](https://appshunter.io/ios/app/slatt/id6761900934)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $19.99 | per month |
| Annual Pro | $190.99 | per year |


## Frequently asked questions

### Is ZettelkastenNote free?

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

### Is Slatt free?

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

### Do ZettelkastenNote or Slatt have ads?

Neither ZettelkastenNote nor Slatt shows ads.

### Which is updated more often, ZettelkastenNote or Slatt?

ZettelkastenNote ships an update every 6 days, and Slatt every 2 weeks. Most recently, ZettelkastenNote was updated on October 24, 2026 and Slatt on October 25, 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.*