# 工书 vs 赢时空PM

The clearest difference is in-app purchases: 工书 at none against 赢时空PM's 12. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 赢时空PM sells 12 one-off in-app purchases. 工书 asks for nothing beyond the download.

工书 ships an update every 3 weeks, 赢时空PM monthly. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 工书 | 赢时空PM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 61 MB | 63 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou jiayibing network technology co. LTD.](https://appshunter.io/developer/1435032489) | [辉图建筑工程科技(上海)有限公司](https://appshunter.io/developer/1387369991) |

## What reviewers say

### 工书

[App page](https://appshunter.io/ios/app/id1439796681)

**Features:** macOS Compatibility

**In-app purchases:** none


### 赢时空PM

[App page](https://appshunter.io/ios/app/pm/id1529542788)

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 积分充值 | $12.99 | one-time |
| 赢时空试用版≤2人/月 | $19.99 | one-time |
| 赢时空积分充值 | $39.99 | one-time |
| 赢时空试用版≤2人/季度 | $54.99 | one-time |
| 赢时空试用版≤10人/月 | $59.99 | one-time |
| 赢时空积分充值 | $89.99 | one-time |
| 赢时空试用版≤10人/季度 | $159.99 | one-time |
| 赢时空积分充值 | $179.99 | one-time |
| 赢时空试用版≤2人/年 | $199.99 | one-time |
| 赢时空积分充值 | $399.99 | one-time |
| 赢时空试用版≤10人/年 | $599.99 | one-time |
| Product VIP Service | $999.99 | one-time |


## Frequently asked questions

### Is 工书 free?

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

### Is 赢时空PM free?

赢时空PM is free to download, with in-app purchases available.

### Do 工书 or 赢时空PM have ads?

Neither 工书 nor 赢时空PM shows ads.

### Which is updated more often, 工书 or 赢时空PM?

工书 ships an update every 3 weeks, and 赢时空PM monthly. Most recently, 工书 was updated on October 25, 2026 and 赢时空PM on October 29, 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.*