# 珍时 vs 时间书

The clearest difference is update cadence: 珍时 at fortnightly against 时间书's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 珍时 sells 15 one-off in-app purchases and 时间书 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

珍时 ships an update fortnightly, 时间书 monthly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 珍时 | 时间书 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 147 MB | 33 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [珍时信息技术(上海)有限公司](https://appshunter.io/developer/1464297277) | [和柳 郑](https://appshunter.io/developer/1664971686) |

## What reviewers say

### 珍时

[App page](https://appshunter.io/ios/app/id1598064746)

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP周会员 | $1.99 | one-time |
| 演讲打卡周会员 | $2.99 | one-time |
| 读书会周会员 | $2.99 | one-time |
| 1个月VIP | $3.99 | one-time |
| SVIP周会员 | $3.99 | one-time |
| VIP月会员 | $3.99 | one-time |
| 演讲打卡月会员 | $4.99 | one-time |
| 读书会月会员 | $5.99 | one-time |
| SVIP月会员 | $7.99 | one-time |
| 3个月VIP | $8.99 | one-time |
| VIP年会员 | $14.99 | one-time |
| 读书会年会员 | $24.99 | one-time |
| 演讲打卡年会员 | $24.99 | one-time |
| 1年VIP | $29.99 | one-time |
| SVIP年会员 | $39.99 | one-time |


### 时间书

[App page](https://appshunter.io/ios/app/id6448215756)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 时间书月会员 | $0.99 | one-time |
| 时间书标签配额 | $0.99 | one-time |
| 时间书年度会员 | $6.99 | one-time |
| 时间书三年会员 | $14.99 | one-time |


## Frequently asked questions

### Is 珍时 free?

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

### Is 时间书 free?

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

### Do 珍时 or 时间书 have ads?

Neither 珍时 nor 时间书 shows ads.

### Which is updated more often, 珍时 or 时间书?

珍时 ships an update fortnightly, and 时间书 monthly. Most recently, 珍时 was updated on October 19, 2026 and 时间书 on October 24, 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.*