# Zettelbox vs Valvesync

The clearest difference is in-app purchases: Valvesync at none against Zettelbox's 3. Zettelbox's advantage is update cadence (every 2 weeks vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Zettelbox sells 3 in-app purchases, starting at $4.99 per month. Valvesync asks for nothing beyond the download.

Zettelbox ships an update every 2 weeks, Valvesync every 12 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Zettelbox | Valvesync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (24 ratings)](https://appshunter.io/ios/app/zettelbox-ai-note-taking/id1605557791/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 12 months |
| Monetization | Freemium | — |
| Size | 117 MB | 61 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Source Research Society Supply Chain Limited](https://appshunter.io/developer/1761795867) | [Cody Creek](https://appshunter.io/developer/1772459528) |

## What reviewers say

### Zettelbox

[App page](https://appshunter.io/ios/app/zettelbox-ai-note-taking/id1605557791)

Capture inspiration and organize your life with this app that integrates notes, to-dos, and scheduling. It helps transform scattered information into a structured knowledge base through smart review and related note linking. Enjoy secure local storage with optional cloud backups.

**Highlights:** Quick note capture with desktop widget, Intuitive tagging and nested categorization, Smart review to rediscover past thoughts, Link related notes for deeper understanding, Local encrypted storage, Cloud backup support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $4.99 | per month |
| Yearly Plan | $19.99 | per year |
| PowerPack Permanent | $64.99 | one-time |


### Valvesync

[App page](https://appshunter.io/ios/app/valvesync/id6736568352)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zettelbox free?

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

### Is Valvesync free?

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

### Do Zettelbox or Valvesync have ads?

Neither Zettelbox nor Valvesync shows ads.

### Which is updated more often, Zettelbox or Valvesync?

Zettelbox ships an update every 2 weeks, and Valvesync every 12 months. Most recently, Zettelbox was updated on September 29, 2026 and Valvesync on October 6, 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.*