# Sleevy vs Zettelkasten

The clearest difference is in-app purchases: Sleevy at none against Zettelkasten's 2. Sleevy also leads on update cadence (fortnightly 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. Sleevy asks for nothing beyond the download.

Sleevy ships an update fortnightly, Zettelkasten monthly. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sleevy | Zettelkasten |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 8 MB | 6 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Onno Klein Hofmeijer](https://appshunter.io/developer/1896760047) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Sleevy

[App page](https://appshunter.io/ios/app/sleevy-bookmark-manager/id6770653332)

**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 Sleevy free?

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

### Is Zettelkasten free?

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

### Do Sleevy or Zettelkasten have ads?

Neither Sleevy nor Zettelkasten shows ads.

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

Sleevy ships an update fortnightly, and Zettelkasten monthly. Most recently, Sleevy was updated on October 7, 2026 and Zettelkasten on October 10, 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.*