# Spaced Recall vs Zettelkasten

The clearest difference is update cadence: Spaced Recall at every 9 days against Zettelkasten's monthly. Spaced Recall also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Spaced Recall sells 4 in-app purchases, starting at $3.00 per month and Zettelkasten sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Spaced Recall ships an update every 9 days, Zettelkasten monthly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Spaced Recall | Zettelkasten |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/zettelkasten-notes-graph/id6771281468/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Size | 24 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [STEVEN DENCHEV](https://appshunter.io/developer/1887278410) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### Spaced Recall

[App page](https://appshunter.io/ios/app/spaced-recall/id6761011354)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rainbow tip | $3.00 | per month |
| Bronze tip | $1.00 | one-time |
| Silver tip | $2.00 | one-time |
| Gold tip | $5.00 | one-time |


### 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 Spaced Recall free?

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

### Is Zettelkasten free?

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

### Do Spaced Recall or Zettelkasten have ads?

Neither Spaced Recall nor Zettelkasten shows ads.

### Which is updated more often, Spaced Recall or Zettelkasten?

Spaced Recall ships an update every 9 days, and Zettelkasten monthly. Most recently, Spaced Recall was updated on October 31, 2026 and Zettelkasten on October 31, 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.*