# 知止 vs ClassTime Lock

知止 and ClassTime Lock are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 知止 | ClassTime Lock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 14 MB | 3 MB |
| Requires iOS | 17.0 | **16.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [玉庭 何](https://appshunter.io/developer/1867438392) | [培薇 刘](https://appshunter.io/developer/1886378554) |

## What reviewers say

### 知止

[App page](https://appshunter.io/ios/app/id6758208809)

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

**In-app purchases:** none


### ClassTime Lock

[App page](https://appshunter.io/ios/app/classtime-lock/id6770405818)

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

**In-app purchases:** none


## Frequently asked questions

### Is 知止 free?

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

### Is ClassTime Lock free?

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

### Do 知止 or ClassTime Lock have ads?

Neither 知止 nor ClassTime Lock shows ads.

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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.*