# CHAINON【公式アプリ】 vs PETSALONいぬいぬ

The clearest difference is update cadence: PETSALONいぬいぬ at fortnightly against CHAINON【公式アプリ】's every 56 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CHAINON【公式アプリ】 ships an update every 56 months, PETSALONいぬいぬ fortnightly. The most recent releases landed on October 6, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | CHAINON【公式アプリ】 | PETSALONいぬいぬ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 56 months | **Fortnightly** |
| Size | 27 MB | 34 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YUNA INOMATA](https://appshunter.io/developer/1544186392) | [MISAKI MASAKI](https://appshunter.io/developer/1741287466) |

## What reviewers say

### CHAINON【公式アプリ】

[App page](https://appshunter.io/ios/app/chainon/id1544186389)

**In-app purchases:** none


### PETSALONいぬいぬ

[App page](https://appshunter.io/ios/app/petsalon/id6497170859)

**In-app purchases:** none


## Frequently asked questions

### Is CHAINON【公式アプリ】 free?

CHAINON【公式アプリ】 is free to download, with no in-app purchases.

### Is PETSALONいぬいぬ free?

PETSALONいぬいぬ is free to download, with no in-app purchases.

### Do CHAINON【公式アプリ】 or PETSALONいぬいぬ have ads?

Neither CHAINON【公式アプリ】 nor PETSALONいぬいぬ shows ads.

### Which is updated more often, CHAINON【公式アプリ】 or PETSALONいぬいぬ?

CHAINON【公式アプリ】 ships an update every 56 months, and PETSALONいぬいぬ fortnightly. Most recently, CHAINON【公式アプリ】 was updated on October 6, 2026 and PETSALONいぬいぬ on October 19, 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.*