# kocore vs ホワイトニングRABBY

kocore 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. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | kocore | 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 | 14 MB | 17 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KYOKO KOBAYASHI](https://appshunter.io/developer/1450806805) | [RIDING,K.K.](https://appshunter.io/developer/1699136869) |

## What reviewers say

### kocore

[App page](https://appshunter.io/ios/app/kocore/id1450807136)

**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 kocore free?

kocore 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 kocore or ホワイトニングRABBY have ads?

Neither kocore nor ホワイトニングRABBY shows ads.

### Which is updated more often, kocore or ホワイトニングRABBY?

kocore ships an update every 38 months, and ホワイトニングRABBY every 38 months. Most recently, kocore was updated on September 9, 2026 and ホワイトニングRABBY on September 10, 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.*