# Zettelbox vs CatNote卡片笔记

Zettelbox and CatNote卡片笔记 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Zettelbox sells 3 in-app purchases, starting at $4.99 per month and CatNote卡片笔记 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Zettelbox ships an update every 2 weeks, CatNote卡片笔记 every 3 weeks. The most recent releases landed on September 10, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Zettelbox | CatNote卡片笔记 |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 117 MB | 10 MB |
| Requires iOS | **16.0** | 16.1 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Source Research Society Supply Chain Limited](https://appshunter.io/developer/1761795867) | [Beijing Xunji Technology Co., Ltd](https://appshunter.io/developer/1663423638) |

## 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 |


### CatNote卡片笔记

[App page](https://appshunter.io/ios/app/catnote/id1663647332)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CatNote月度会员 | $0.99 | one-time |
| CatNote年度会员 | $7.99 | one-time |
| CatNote永久会员 | $14.99 | one-time |


## Frequently asked questions

### Is Zettelbox free?

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

### Is CatNote卡片笔记 free?

CatNote卡片笔记 is free to download, with in-app purchases available.

### Do Zettelbox or CatNote卡片笔记 have ads?

Neither Zettelbox nor CatNote卡片笔记 shows ads.

### Which is updated more often, Zettelbox or CatNote卡片笔记?

Zettelbox ships an update every 2 weeks, and CatNote卡片笔记 every 3 weeks. Most recently, Zettelbox was updated on September 10, 2026 and CatNote卡片笔记 on September 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*