# 讀書小幫手 vs LockStudy

The clearest difference is in-app purchases: 讀書小幫手 at none against LockStudy's 2. 讀書小幫手 also leads on update cadence (daily vs monthly) and iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. LockStudy sells 2 in-app purchases, starting at $1.99 per month. 讀書小幫手 asks for nothing beyond the download.

讀書小幫手 ships an update daily, LockStudy monthly. Both last shipped on October 9, 2026.

## The numbers

| Metric | 讀書小幫手 | LockStudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Size | 37 MB | 8 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lichuan Cheng](https://appshunter.io/developer/1811966129) | [Glanz Studio](https://appshunter.io/developer/1785357972) |

## What reviewers say

### 讀書小幫手

[App page](https://appshunter.io/ios/app/id6746719832)

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

**In-app purchases:** none


### LockStudy

[App page](https://appshunter.io/ios/app/lockstudy-built-for-focus/id6756006023)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LockStudy Pro Monthly | $1.99 | per month |
| LockStudy Pro Lifetime | $22.99 | one-time |


## Frequently asked questions

### Is 讀書小幫手 free?

讀書小幫手 is free to download, with no in-app purchases.

### Is LockStudy free?

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

### Do 讀書小幫手 or LockStudy have ads?

Neither 讀書小幫手 nor LockStudy shows ads.

### Which is updated more often, 讀書小幫手 or LockStudy?

讀書小幫手 ships an update daily, and LockStudy monthly. Most recently, 讀書小幫手 was updated on October 9, 2026 and LockStudy on October 9, 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.*