# Opelog vs KARARI

The clearest difference is in-app purchases: Opelog at none against KARARI's 2. Opelog also leads on iOS requirement (17.0 vs 26.0). KARARI's advantage is update cadence (daily vs every 3 days). On price, ads and device support there is nothing between them.

Both are free to download. KARARI sells 2 in-app purchases, starting at $1.99 per month. Opelog asks for nothing beyond the download.

Opelog ships an update every 3 days, KARARI daily. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Opelog | KARARI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Size | 6 MB | 25 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yusei Ando](https://appshunter.io/developer/1881955944) | [Hasegawa Yuki](https://appshunter.io/developer/6781115519) |

## What reviewers say

### Opelog

[App page](https://appshunter.io/ios/app/opelog-open-date-log/id6766040294)

**In-app purchases:** none


### KARARI

[App page](https://appshunter.io/ios/app/karari/id6794361869)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム（月額） | $1.99 | per month |
| プレミアム（年額） | $14.99 | per year |


## Frequently asked questions

### Is Opelog free?

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

### Is KARARI free?

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

### Do Opelog or KARARI have ads?

Neither Opelog nor KARARI shows ads.

### Which is updated more often, Opelog or KARARI?

Opelog ships an update every 3 days, and KARARI daily. Most recently, Opelog was updated on October 25, 2026 and KARARI on October 8, 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.*