# 16 Relay Controller vs ZZ.surf

The clearest difference is update cadence: ZZ.surf at every 11 days against 16 Relay Controller's every 34 months. 16 Relay Controller's advantage is iOS requirement (18.6 vs 26.5). 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.

16 Relay Controller ships an update every 34 months, ZZ.surf every 11 days. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 16 Relay Controller | ZZ.surf |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 11 days** |
| Size | 0 MB | 1 MB |
| Requires iOS | **18.6** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Mike Henry](https://appshunter.io/developer/1219782847) | [Pierre Carrier](https://appshunter.io/developer/1686133517) |

## What reviewers say

### 16 Relay Controller

[App page](https://appshunter.io/ios/app/16-relay-controller/id1541478119)

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

**In-app purchases:** none


### ZZ.surf

[App page](https://appshunter.io/ios/app/zzsurf/id6773672030)

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

**In-app purchases:** none


## Frequently asked questions

### Is 16 Relay Controller free?

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

### Is ZZ.surf free?

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

### Do 16 Relay Controller or ZZ.surf have ads?

Neither 16 Relay Controller nor ZZ.surf shows ads.

### Which is updated more often, 16 Relay Controller or ZZ.surf?

16 Relay Controller ships an update every 34 months, and ZZ.surf every 11 days. Most recently, 16 Relay Controller was updated on September 18, 2026 and ZZ.surf on September 20, 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.*