# MetaMorphos vs Underfoot

The clearest difference is in-app purchases: MetaMorphos at none against Underfoot's 2. MetaMorphos also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.0). Underfoot's advantage is update cadence (every 3 months vs every 13 months). On price and ads there is nothing between them.

Both are free to download. Underfoot sells 2 in-app purchases, starting at $2.99 per month. MetaMorphos asks for nothing beyond the download.

MetaMorphos ships an update every 13 months, Underfoot every 3 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | MetaMorphos | Underfoot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Size | 1.1 GB | 102 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Université de Mons](https://appshunter.io/developer/1127719362) | [Jason Brannon](https://appshunter.io/developer/1868090060) |

## What reviewers say

### MetaMorphos

[App page](https://appshunter.io/ios/app/metamorphos/id1133453992)

**Features:** macOS Compatibility

**In-app purchases:** none


### Underfoot

[App page](https://appshunter.io/ios/app/underfoot-bug-field-guide/id6786962032)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Underfoot Pro | $2.99 | per month |
| Underfoot Pro Annual | $24.99 | per year |


## Frequently asked questions

### Is MetaMorphos free?

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

### Is Underfoot free?

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

### Do MetaMorphos or Underfoot have ads?

Neither MetaMorphos nor Underfoot shows ads.

### Which is updated more often, MetaMorphos or Underfoot?

MetaMorphos ships an update every 13 months, and Underfoot every 3 months. Most recently, MetaMorphos was updated on October 20, 2026 and Underfoot on October 6, 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.*