# Permission Slip vs Iris Drive

The clearest difference is update cadence: Permission Slip at every 9 days against Iris Drive's every 5 weeks. Permission Slip also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Permission Slip ships an update every 9 days, Iris Drive every 5 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Permission Slip | Iris Drive |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 weeks |
| Size | 26 MB | 89 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Supersuit Technologies LLC](https://appshunter.io/developer/1891077839) | [Sirius Business Oy](https://appshunter.io/developer/6785410350) |

## What reviewers say

### Permission Slip

[App page](https://appshunter.io/ios/app/permission-slip/id6761718603)

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

**In-app purchases:** none


### Iris Drive

[App page](https://appshunter.io/ios/app/iris-drive/id6785422241)

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

**In-app purchases:** none


## Frequently asked questions

### Is Permission Slip free?

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

### Is Iris Drive free?

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

### Do Permission Slip or Iris Drive have ads?

Neither Permission Slip nor Iris Drive shows ads.

### Which is updated more often, Permission Slip or Iris Drive?

Permission Slip ships an update every 9 days, and Iris Drive every 5 weeks. Most recently, Permission Slip was updated on October 25, 2026 and Iris Drive on October 28, 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.*