# Olu' olu　公式アプリ vs ホワイトニングRABBY

Olu' olu　公式アプリ and ホワイトニングRABBY are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 38 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | Olu' olu　公式アプリ | ホワイトニングRABBY |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | Every 38 months |
| Size | 16 MB | 17 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ATSUKO WATANABE](https://appshunter.io/developer/1630720252) | [RIDING,K.K.](https://appshunter.io/developer/1699136869) |

## What reviewers say

### Olu' olu　公式アプリ

[App page](https://appshunter.io/ios/app/olu-olu/id1630720250)

**In-app purchases:** none


### ホワイトニングRABBY

[App page](https://appshunter.io/ios/app/rabby/id6452982228)

**In-app purchases:** none


## Frequently asked questions

### Is Olu' olu　公式アプリ free?

Olu' olu　公式アプリ is free to download, with no in-app purchases.

### Is ホワイトニングRABBY free?

ホワイトニングRABBY is free to download, with no in-app purchases.

### Do Olu' olu　公式アプリ or ホワイトニングRABBY have ads?

Neither Olu' olu　公式アプリ nor ホワイトニングRABBY shows ads.

### Which is updated more often, Olu' olu　公式アプリ or ホワイトニングRABBY?

Olu' olu　公式アプリ ships an update every 38 months, and ホワイトニングRABBY every 38 months. Most recently, Olu' olu　公式アプリ was updated on October 27, 2026 and ホワイトニングRABBY on October 27, 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.*