# Diary! SmartDiary vs ARDB Calendar

The clearest difference is in-app purchases: ARDB Calendar at none against Diary! SmartDiary's 1. ARDB Calendar also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 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. ARDB Calendar asks for nothing beyond the download.

Diary! SmartDiary ships an update every 3 months, ARDB Calendar every 3 weeks. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Diary! SmartDiary | ARDB Calendar |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 66 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Okuno](https://appshunter.io/developer/1234067922) | [RURAL DEVELOPMENT BANK](https://appshunter.io/developer/1468883317) |

## 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 |


### ARDB Calendar

[App page](https://appshunter.io/ios/app/ardb-calendar/id1489440538)

**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 ARDB Calendar free?

ARDB Calendar is free to download, with no in-app purchases.

### Do Diary! SmartDiary or ARDB Calendar have ads?

Diary! SmartDiary shows ads; ARDB Calendar does not.

### Which is updated more often, Diary! SmartDiary or ARDB Calendar?

Diary! SmartDiary ships an update every 3 months, and ARDB Calendar every 3 weeks. Most recently, Diary! SmartDiary was updated on October 24, 2026 and ARDB Calendar on October 7, 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.*