# 郵便番号検索 vs Diary! SmartDiary

The clearest difference is review sentiment: Diary! SmartDiary at 93% against 郵便番号検索's 50%. Diary! SmartDiary also leads on update cadence (every 3 months vs every 10 months) and iOS requirement (15.0 vs 17.6). 郵便番号検索's advantage is in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Diary! SmartDiary sells 1 one-off in-app purchase. 郵便番号検索 asks for nothing beyond the download.

郵便番号検索 ships an update every 10 months, Diary! SmartDiary every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 郵便番号検索 | Diary! SmartDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (45 ratings)](https://appshunter.io/ios/app/diary-smartdiary/id1381186388/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | 50.0% of reviews | **93.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 9 MB | 12 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [hirokazu murabe](https://appshunter.io/developer/894364772) | [Hideki Okuno](https://appshunter.io/developer/1234067922) |

## What reviewers say

### 郵便番号検索

[App page](https://appshunter.io/ios/app/id1066906601)

Find postal codes from addresses or addresses from postal codes with this free app. It works offline, saving data costs and ensuring usability even in areas with weak or no internet connection.

**Highlights:** Search postal code by address, Search address by postal code, Offline functionality, Free to use, Saves data costs

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 郵便番号検索 free?

郵便番号検索 is free to download, with no in-app purchases.

### Is Diary! SmartDiary free?

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

### Do 郵便番号検索 or Diary! SmartDiary have ads?

Both 郵便番号検索 and Diary! SmartDiary show ads.

### Which is updated more often, 郵便番号検索 or Diary! SmartDiary?

郵便番号検索 ships an update every 10 months, and Diary! SmartDiary every 3 months. Most recently, 郵便番号検索 was updated on October 24, 2026 and Diary! SmartDiary 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.*