# Pure Phase vs Isla

The clearest difference is in-app purchases: Pure Phase at none against Isla's 2. Pure Phase also leads on iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Isla sells 2 in-app purchases, starting at $4.99 per month. Pure Phase asks for nothing beyond the download.

## The numbers

| Metric | Pure Phase | Isla |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 4 MB | 2 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Mark Friedlander](https://appshunter.io/developer/1812095304) | [Markus Vaha](https://appshunter.io/developer/1706287937) |

## What reviewers say

### Pure Phase

[App page](https://appshunter.io/ios/app/pure-phase/id6767311034)

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

**In-app purchases:** none


### Isla

[App page](https://appshunter.io/ios/app/isla-nervous-system-reset/id6784335577)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Isla Premium — Monthly | $4.99 | per month |
| Isla Premium — Yearly | $29.99 | per year |


## Frequently asked questions

### Is Pure Phase free?

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

### Is Isla free?

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

### Do Pure Phase or Isla have ads?

Neither Pure Phase nor Isla shows ads.

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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.*