# 三省笔记 vs 零秒专注

三省笔记 and 零秒专注 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. 三省笔记 sells 2 in-app purchases, starting at $2.99 per month and 零秒专注 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

三省笔记 ships an update weekly, 零秒专注 every 10 days. The most recent releases landed on October 28, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 三省笔记 | 零秒专注 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Size | 69 MB | 55 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [嘉达 黄](https://appshunter.io/developer/1708566399) | [朝阳 李](https://appshunter.io/developer/1552160006) |

## What reviewers say

### 三省笔记

[App page](https://appshunter.io/ios/app/ai/id6759858125)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $2.99 | per month |
| Annual Plan | $19.99 | per year |


### 零秒专注

[App page](https://appshunter.io/ios/app/id6762844820)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly VIP | $0.99 | one-time |
| Annual VIP | $2.99 | one-time |
| Permanent VIP | $3.99 | one-time |


## Frequently asked questions

### Is 三省笔记 free?

三省笔记 is free to download, with in-app purchases available.

### Is 零秒专注 free?

零秒专注 is free to download, with in-app purchases available.

### Do 三省笔记 or 零秒专注 have ads?

Neither 三省笔记 nor 零秒专注 shows ads.

### Which is updated more often, 三省笔记 or 零秒专注?

三省笔记 ships an update weekly, and 零秒专注 every 10 days. Most recently, 三省笔记 was updated on October 28, 2026 and 零秒专注 on October 20, 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.*