# 给未来写封信 vs Moo日记

The clearest difference is ads: 给未来写封信 at none against Moo日记's shown. 给未来写封信 also leads on iOS requirement (12.0 vs 15.0). Moo日记's advantage is ratings volume (364 vs 26). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. 给未来写封信 sells 8 one-off in-app purchases and Moo日记 sells 14 in-app purchases, starting at $1.99 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for 给未来写封信 against 4.8 for Moo日记. That said, the two scores are not equally well evidenced: Moo日记 has 364 ratings behind it against 26, so its average is the more settled of the two. Written reviews are what separate them: 83% of 给未来写封信's written reviews are positive against 76% of Moo日记's.

给未来写封信 ships an update every 3 weeks, Moo日记 monthly. The most recent releases landed on August 31, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | 给未来写封信 | Moo日记 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (26 ratings)](https://appshunter.io/ios/app/id1330852849/reviews) | [4.8 (364 ratings)](https://appshunter.io/ios/app/moo/id1473250948/reviews) |
| Number of ratings | 26 | **364** |
| Positive reviews | **82.6% of reviews** | 76.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Freemium |
| Size | 163 MB | 276 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [庆桐 马](https://appshunter.io/developer/1176019983) | [重庆书漫文化传播有限公司](https://appshunter.io/developer/1230330554) |

## What reviewers say

### 给未来写封信

[App page](https://appshunter.io/ios/app/id1330852849)

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 有声信件 | $0.99 | one-time |
| 照片信件 | $0.99 | one-time |
| 录音+照片信件 | $0.99 | one-time |
| 普通信件+1 | $0.99 | one-time |
| Hope Card | $0.99 | one-time |
| 标准版纸质信 | $5.99 | one-time |
| 礼盒版纸质信 | $9.99 | one-time |
| True Love Card | $12.99 | one-time |


### Moo日记

[App page](https://appshunter.io/ios/app/moo/id1473250948)

A minimalist diary app designed to help users record their daily moods, thoughts, and life events. It offers a safe space to express feelings, track emotional patterns, and connect with a supportive community.

**Highlights:** Daily mood and story recording, Conversational journaling prompts, Mood trend visualization, Supportive community forum, Elegant minimalist design, Cloud sync and encryption (Pro)

**Features:** Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包季 | $1.99 | per 3 months |
| 连续包年 | $5.99 | per year |
| 2000胡萝北 | $0.99 | one-time |
| 2根萝卜 | $1.99 | one-time |
| ai月度会员 | $1.99 | one-time |
| AI增值服务月卡 | $1.99 | one-time |
| 专业版一季 | $3.99 | one-time |
| 8000胡萝北 | $3.99 | one-time |
| 永久版 | $5.99 | one-time |
| 永久专业版 | $5.99 | one-time |
| 16000胡萝北 | $5.99 | one-time |
| 专业版一年 | $9.99 | one-time |
| AI增值服务年卡 | $19.99 | one-time |
| Moo日记永久专业版原价 | $39.99 | one-time |


## Frequently asked questions

### Is 给未来写封信 free?

给未来写封信 is free to download, with in-app purchases available.

### Is Moo日记 free?

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

### Which has better reviews, 给未来写封信 or Moo日记?

给未来写封信 and Moo日记 are both rated 4.8 out of 5 on the App Store, from 26 and 364 ratings respectively.

### Do 给未来写封信 or Moo日记 have ads?

Moo日记 shows ads; 给未来写封信 does not.

### Which is updated more often, 给未来写封信 or Moo日记?

给未来写封信 ships an update every 3 weeks, and Moo日记 monthly. Most recently, 给未来写封信 was updated on August 31, 2026 and Moo日记 on September 25, 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.*