# Sandbox Relay vs Pier Shell

The clearest difference is device support: Pier Shell at 3 against Sandbox Relay's 1. Sandbox Relay's advantage is iOS requirement (16.4 vs 26.5). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Sandbox Relay | Pier Shell |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 8 days |
| Size | 32 MB | 12 MB |
| Requires iOS | **16.4** | 26.5 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Eric Boumendil](https://appshunter.io/developer/1116493219) | [Muhamad Nur Asyraaf](https://appshunter.io/developer/1841873975) |

## What reviewers say

### Sandbox Relay

[App page](https://appshunter.io/ios/app/sandbox-relay/id6791522669)

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

**In-app purchases:** none


### Pier Shell

[App page](https://appshunter.io/ios/app/pier-shell/id6801818407)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sandbox Relay free?

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

### Is Pier Shell free?

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

### Do Sandbox Relay or Pier Shell have ads?

Neither Sandbox Relay nor Pier Shell 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.*