# ScubaLink vs HyQual Interface App

The clearest difference is update cadence: HyQual Interface App at weekly against ScubaLink's every 21 months. HyQual Interface App also leads on iOS requirement (12.1 vs 15.6). 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.

ScubaLink ships an update every 21 months, HyQual Interface App weekly. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | ScubaLink | HyQual Interface App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Weekly** |
| Size | 8 MB | 15 MB |
| Requires iOS | 15.6 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Royal Eijkelkamp](https://appshunter.io/developer/1667657637) | [Kisters AG](https://appshunter.io/developer/952206147) |

## What reviewers say

### ScubaLink

[App page](https://appshunter.io/ios/app/scubalink/id1667657635)

**Features:** Vision Pro support

**In-app purchases:** none


### HyQual Interface App

[App page](https://appshunter.io/ios/app/hyqual-interface-app/id6449320545)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ScubaLink free?

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

### Is HyQual Interface App free?

HyQual Interface App is free to download, with no in-app purchases.

### Do ScubaLink or HyQual Interface App have ads?

Neither ScubaLink nor HyQual Interface App shows ads.

### Which is updated more often, ScubaLink or HyQual Interface App?

ScubaLink ships an update every 21 months, and HyQual Interface App weekly. Most recently, ScubaLink was updated on October 10, 2026 and HyQual Interface App on October 2, 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.*