# Diary! SmartDiary vs ブレインスリープクロック

The clearest difference is review sentiment: Diary! SmartDiary at 93% against ブレインスリープクロック's 33%. Diary! SmartDiary also leads on update cadence (every 3 months vs every 12 months). ブレインスリープクロック's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Diary! SmartDiary sells 1 one-off in-app purchase. ブレインスリープクロック asks for nothing beyond the download.

Diary! SmartDiary ships an update every 3 months, ブレインスリープクロック every 12 months. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Diary! SmartDiary | ブレインスリープクロック |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/diary-smartdiary/id1381186388/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | **93.3% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 28 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Okuno](https://appshunter.io/developer/1234067922) | [Brain Sleep](https://appshunter.io/developer/1610963812) |

## What reviewers say

### Diary! SmartDiary

[App page](https://appshunter.io/ios/app/diary-smartdiary/id1381186388)

Record daily life with photos and track your mood and schedule on a calendar. Secure your entries with a passcode and easily access past memories. Customize your diary with various settings for a personalized experience.

**Highlights:** Record memories with photos, Track daily mood and schedule, Passcode lock with biometric support, iCloud backup and data migration, Customizable calendar and diary settings, Input forgetting notifications

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### ブレインスリープクロック

[App page](https://appshunter.io/ios/app/id1610963911)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diary! SmartDiary free?

Diary! SmartDiary is free to download, with in-app purchases available.

### Is ブレインスリープクロック free?

ブレインスリープクロック is free to download, with no in-app purchases.

### Do Diary! SmartDiary or ブレインスリープクロック have ads?

Diary! SmartDiary shows ads; ブレインスリープクロック does not.

### Which is updated more often, Diary! SmartDiary or ブレインスリープクロック?

Diary! SmartDiary ships an update every 3 months, and ブレインスリープクロック every 12 months. Most recently, Diary! SmartDiary was updated on October 25, 2026 and ブレインスリープクロック on October 6, 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.*