# hero machine vs みんなで! でんしゃクイズ!! for キッズ

The clearest difference is in-app purchases: hero machine at none against みんなで! でんしゃクイズ!! for キッズ's 2. hero machine also leads on iOS requirement (14.0 vs 17.0). みんなで! でんしゃクイズ!! for キッズ's advantage is ads (none vs shown) and update cadence (every 3 days vs monthly). On price and device support there is nothing between them.

Both are free to download. みんなで! でんしゃクイズ!! for キッズ sells 2 one-off in-app purchases. hero machine asks for nothing beyond the download.

hero machine ships an update monthly, みんなで! でんしゃクイズ!! for キッズ every 3 days. Both last shipped on November 8, 2026.

## The numbers

| Metric | hero machine | みんなで! でんしゃクイズ!! for キッズ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 days** |
| Size | 139 MB | 21 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HARUNOBU SATAKUNI](https://appshunter.io/developer/1364844825) | [Digitalate LLC](https://appshunter.io/developer/1656563991) |

## What reviewers say

### hero machine

[App page](https://appshunter.io/ios/app/hero-machine/id6480411540)

**Features:** macOS Compatibility

**In-app purchases:** none


### みんなで! でんしゃクイズ!! for キッズ

[App page](https://appshunter.io/ios/app/for/id6744117372)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Train Quiz - hard | $0.49 | one-time |
| でんしゃクイズ - ふつう | $0.49 | one-time |


## Frequently asked questions

### Is hero machine free?

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

### Is みんなで! でんしゃクイズ!! for キッズ free?

みんなで! でんしゃクイズ!! for キッズ is free to download, with in-app purchases available.

### Do hero machine or みんなで! でんしゃクイズ!! for キッズ have ads?

hero machine shows ads; みんなで! でんしゃクイズ!! for キッズ does not.

### Which is updated more often, hero machine or みんなで! でんしゃクイズ!! for キッズ?

hero machine ships an update monthly, and みんなで! でんしゃクイズ!! for キッズ every 3 days. Most recently, hero machine was updated on November 8, 2026 and みんなで! でんしゃクイズ!! for キッズ on November 8, 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.*