# King Sound vs RidgeRelay

The clearest difference is update cadence: RidgeRelay at every 3 months against King Sound's every 22 months. King Sound's advantage is iOS requirement (9.0 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.

King Sound ships an update every 22 months, RidgeRelay every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | King Sound | RidgeRelay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ridgerelay/id6467876360/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 19 MB | 1 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Waytronic Electronics Company Limited](https://appshunter.io/developer/1103554270) | [SWITCHED KINETIC IDEAS LLC](https://appshunter.io/developer/1709310563) |

## What reviewers say

### King Sound

[App page](https://appshunter.io/ios/app/king-sound/id1437709752)

**Features:** macOS Compatibility

**In-app purchases:** none


### RidgeRelay

[App page](https://appshunter.io/ios/app/ridgerelay/id6467876360)

Control up to six relay outputs directly from your iPhone. Personalize relay names, icons, and colors. Monitor live hardware status via Bluetooth connection.

**Highlights:** Control six relay outputs, Customize relay names, Personalize icons and colors, View live hardware status, Bluetooth connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is King Sound free?

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

### Is RidgeRelay free?

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

### Do King Sound or RidgeRelay have ads?

Neither King Sound nor RidgeRelay shows ads.

### Which is updated more often, King Sound or RidgeRelay?

King Sound ships an update every 22 months, and RidgeRelay every 3 months. Most recently, King Sound was updated on November 2, 2026 and RidgeRelay on November 3, 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.*