# Under the Bay vs hero machine

The clearest difference is ads: Under the Bay at none against hero machine's shown. hero machine's advantage is update cadence (monthly vs every 25 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Under the Bay ships an update every 25 months, hero machine monthly. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Under the Bay | hero machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/under-the-bay/id1641553491/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 25 months | **Monthly** |
| Monetization | Free | — |
| Size | 930 MB | 139 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lisa Moren](https://appshunter.io/developer/1641553493) | [HARUNOBU SATAKUNI](https://appshunter.io/developer/1364844825) |

## What reviewers say

### Under the Bay

[App page](https://appshunter.io/ios/app/under-the-bay/id1641553491)

Experience the hidden world beneath the Chesapeake Bay through augmented reality. Point your device at water to reveal stories, hear original music, and see animations that change based on live environmental data.

**Highlights:** Augmented reality underwater exploration, Live environmental data integration, Dynamic music and animation, Artist-narrated stories, Selectable scenes, Historical data playback

**Features:** macOS Compatibility

**In-app purchases:** none


### hero machine

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Under the Bay free?

Under the Bay is free to download, with no in-app purchases.

### Is hero machine free?

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

### Do Under the Bay or hero machine have ads?

hero machine shows ads; Under the Bay does not.

### Which is updated more often, Under the Bay or hero machine?

Under the Bay ships an update every 25 months, and hero machine monthly. Most recently, Under the Bay was updated on October 21, 2026 and hero machine on October 11, 2026.

---

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