# ハピピランド & アメイジングワールド vs PETRO

The clearest difference is update cadence: PETRO at every 9 days against ハピピランド & アメイジングワールド's every 17 months. PETRO also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.6). On price, ads and in-app purchases there is nothing between them.

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

ハピピランド & アメイジングワールド ships an update every 17 months, PETRO every 9 days. The most recent releases landed on September 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ハピピランド & アメイジングワールド | PETRO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 12 MB | 83 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GLOBAL SOLUTIONS K.K.](https://appshunter.io/developer/1576622875) | [G-tech International](https://appshunter.io/developer/1724934663) |

## What reviewers say

### ハピピランド & アメイジングワールド

[App page](https://appshunter.io/ios/app/and/id1576622873)

This is a family membership-based indoor kids' park for children 12 and under and their families. The official app allows you to issue a membership barcode, receive the latest store information, earn points, get exclusive member benefits with coupons, and navigate to nearby stores. It also includes links to social media.

**Highlights:** Family membership barcode issuance, Latest store information, Earn usage points, App-exclusive member benefits, Store navigation, SNS links

**Features:** macOS Compatibility

**In-app purchases:** none


### PETRO

[App page](https://appshunter.io/ios/app/petro/id6758812287)

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

**In-app purchases:** none


## Frequently asked questions

### Is ハピピランド & アメイジングワールド free?

ハピピランド & アメイジングワールド is free to download, with no in-app purchases.

### Is PETRO free?

PETRO is free to download, with no in-app purchases.

### Do ハピピランド & アメイジングワールド or PETRO have ads?

Neither ハピピランド & アメイジングワールド nor PETRO shows ads.

### Which is updated more often, ハピピランド & アメイジングワールド or PETRO?

ハピピランド & アメイジングワールド ships an update every 17 months, and PETRO every 9 days. Most recently, ハピピランド & アメイジングワールド was updated on September 24, 2026 and PETRO on October 9, 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.*