# やかんひこう vs ASTRO

The clearest difference is in-app purchases: やかんひこう at none against ASTRO's 1. やかんひこう also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). ASTRO's advantage is update cadence (weekly vs every 2 months). On price and ads there is nothing between them.

Both are free to download. ASTRO sells 1 one-off in-app purchase. やかんひこう asks for nothing beyond the download.

やかんひこう ships an update every 2 months, ASTRO weekly. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | やかんひこう | ASTRO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Size | 51 MB | 94 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [有限会社fupac](https://appshunter.io/developer/1807954268) | [SHINTARO NAKAOKA](https://appshunter.io/developer/1020027439) |

## What reviewers say

### やかんひこう

[App page](https://appshunter.io/ios/app/id6754232361)

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

**In-app purchases:** none


### ASTRO

[App page](https://appshunter.io/ios/app/astro-boost/id6761886332)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlimited Stamina | $1.99 | one-time |


## Frequently asked questions

### Is やかんひこう free?

やかんひこう is free to download, with no in-app purchases.

### Is ASTRO free?

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

### Do やかんひこう or ASTRO have ads?

Both やかんひこう and ASTRO show ads.

### Which is updated more often, やかんひこう or ASTRO?

やかんひこう ships an update every 2 months, and ASTRO weekly. Most recently, やかんひこう was updated on October 12, 2026 and ASTRO on October 28, 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.*