# 16文字日記 vs MiiBook Journal

The clearest difference is in-app purchases: 16文字日記 at none against MiiBook Journal's 3. MiiBook Journal's advantage is update cadence (monthly vs every 2 months) and review sentiment (63% vs 50%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MiiBook Journal sells 3 in-app purchases, starting at $1.99 per month. 16文字日記 asks for nothing beyond the download.

16文字日記 ships an update every 2 months, MiiBook Journal monthly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 16文字日記 | MiiBook Journal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/miibook-journal-private-diary/id6451179720/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 50.0% of reviews | **62.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 75 MB | 153 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kenta Fukushima](https://appshunter.io/developer/1514527789) | [Ryunosuke Nagase](https://appshunter.io/developer/1506451599) |

## What reviewers say

### 16文字日記

[App page](https://appshunter.io/ios/app/16/id6448646374)

This app allows users to record their daily thoughts and memories using only 16 characters. It's designed for those who find long journaling difficult or are short on time, making it easy to maintain a daily record and review past entries.

**Highlights:** 16-character daily entries, Monthly calendar view, Writing reminders, Passcode lock, Easy to continue daily

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

**In-app purchases:** none


### MiiBook Journal

[App page](https://appshunter.io/ios/app/miibook-journal-private-diary/id6451179720)

This personal diary app offers a clean and engaging interface for easy daily journaling. It allows for quick entries, calendar reflections, and automatic monthly summaries. Prioritizing privacy, all data is stored locally on your device.

**Highlights:** Instant entry upon opening, Calendar reflections, AI monthly summaries, Dark mode support, Reminder notifications, Home Widget, Local data storage

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREMIUM - MONTHLY | $1.99 | per month |
| PREMIUM - ANNUAL | $22.99 | per year |
| PREMIUM - LIFETIME | $49.99 | one-time |


## Frequently asked questions

### Is 16文字日記 free?

16文字日記 is free to download, with no in-app purchases.

### Is MiiBook Journal free?

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

### Do 16文字日記 or MiiBook Journal have ads?

Both 16文字日記 and MiiBook Journal show ads.

### Which is updated more often, 16文字日記 or MiiBook Journal?

16文字日記 ships an update every 2 months, and MiiBook Journal monthly. Most recently, 16文字日記 was updated on October 27, 2026 and MiiBook Journal 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.*