# 北山建築 vs Diary! SmartDiary

The clearest difference is in-app purchases: 北山建築 at none against Diary! SmartDiary's 1. 北山建築 also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.0). Diary! SmartDiary's advantage is update cadence (every 3 months vs every 20 months). On price and device support there is nothing between them.

Both are free to download. Diary! SmartDiary sells 1 one-off in-app purchase. 北山建築 asks for nothing beyond the download.

北山建築 ships an update every 20 months, Diary! SmartDiary every 3 months. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 北山建築 | Diary! SmartDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (44 ratings)](https://appshunter.io/ios/app/diary-smartdiary/id1381186388/reviews)** |
| Number of ratings | — | **44** |
| Positive reviews | — | 93.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 12 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KITAYAMA KENCHIKU, Y.K.](https://appshunter.io/developer/1481529339) | [Hideki Okuno](https://appshunter.io/developer/1234067922) |

## What reviewers say

### 北山建築

[App page](https://appshunter.io/ios/app/id1218074142)

**Features:** macOS Compatibility

**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 北山建築 free?

北山建築 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 北山建築 or Diary! SmartDiary have ads?

Diary! SmartDiary shows ads; 北山建築 does not.

### Which is updated more often, 北山建築 or Diary! SmartDiary?

北山建築 ships an update every 20 months, and Diary! SmartDiary every 3 months. Most recently, 北山建築 was updated on October 10, 2026 and Diary! SmartDiary on October 17, 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.*