# CHAINON【公式アプリ】 vs Hello Good Day!

CHAINON【公式アプリ】 and Hello Good Day! 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.

CHAINON【公式アプリ】 ships an update every 56 months, Hello Good Day! every 38 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | CHAINON【公式アプリ】 | Hello Good Day! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 56 months | **Every 38 months** |
| Size | 27 MB | 18 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YUNA INOMATA](https://appshunter.io/developer/1544186392) | [MASAHIDE NAITO](https://appshunter.io/developer/1678665709) |

## What reviewers say

### CHAINON【公式アプリ】

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

**In-app purchases:** none


### Hello Good Day!

[App page](https://appshunter.io/ios/app/hello-good-day/id6446661947)

**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 Hello Good Day! free?

Hello Good Day! is free to download, with no in-app purchases.

### Do CHAINON【公式アプリ】 or Hello Good Day! have ads?

Neither CHAINON【公式アプリ】 nor Hello Good Day! shows ads.

### Which is updated more often, CHAINON【公式アプリ】 or Hello Good Day!?

CHAINON【公式アプリ】 ships an update every 56 months, and Hello Good Day! every 38 months. Most recently, CHAINON【公式アプリ】 was updated on November 7, 2026 and Hello Good Day! on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*