# UniPulse vs Zettelkasten

The clearest difference is in-app purchases: UniPulse at none against Zettelkasten's 2. Zettelkasten's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

UniPulse ships an update fortnightly, Zettelkasten monthly. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | UniPulse | Zettelkasten |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 8 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ali Kaan Karagzgil](https://appshunter.io/developer/1756084148) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### UniPulse

[App page](https://appshunter.io/ios/app/unipulse/id6759740233)

**Features:** macOS Compatibility

**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 UniPulse free?

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

### Is Zettelkasten free?

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

### Do UniPulse or Zettelkasten have ads?

Neither UniPulse nor Zettelkasten shows ads.

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

UniPulse ships an update fortnightly, and Zettelkasten monthly. Most recently, UniPulse was updated on October 13, 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.*