# 小时光SmartTime vs 奶豆书

The clearest difference is in-app purchases: 奶豆书 at none against 小时光SmartTime's 7. 小时光SmartTime's advantage is update cadence (every 6 weeks vs every 5 months) and iOS requirement (13 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 小时光SmartTime sells 7 one-off in-app purchases. 奶豆书 asks for nothing beyond the download.

小时光SmartTime ships an update every 6 weeks, 奶豆书 every 5 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 小时光SmartTime | 奶豆书 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Size | 23 MB | 22 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [羽 蔡](https://appshunter.io/developer/1364939715) | [其诺 吕](https://appshunter.io/developer/1881180068) |

## What reviewers say

### 小时光SmartTime

[App page](https://appshunter.io/ios/app/smarttime/id1364939716)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 鼓励更新 | $0.99 | one-time |
| 100M日记空间 | $1.99 | one-time |
| 慷慨捐赠 | $2.99 | one-time |
| 300M日记空间 | $4.99 | one-time |
| 500M日记空间 | $6.99 | one-time |
| 600M日记空间 | $7.99 | one-time |
| 超大赞助 | $9.99 | one-time |


### 奶豆书

[App page](https://appshunter.io/ios/app/id6763515171)

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

**In-app purchases:** none


## Frequently asked questions

### Is 小时光SmartTime free?

小时光SmartTime is free to download, with in-app purchases available.

### Is 奶豆书 free?

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

### Do 小时光SmartTime or 奶豆书 have ads?

Neither 小时光SmartTime nor 奶豆书 shows ads.

### Which is updated more often, 小时光SmartTime or 奶豆书?

小时光SmartTime ships an update every 6 weeks, and 奶豆书 every 5 months. Most recently, 小时光SmartTime was updated on October 7, 2026 and 奶豆书 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.*