# Deep Decibels vs Rhylm

The clearest difference is in-app purchases: Rhylm at none against Deep Decibels's 2. Rhylm also leads on update cadence (every 5 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Deep Decibels sells 2 in-app purchases, starting at $2.99 per month. Rhylm asks for nothing beyond the download.

Deep Decibels ships an update every 2 weeks, Rhylm every 5 days. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Deep Decibels | Rhylm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 109 MB | 66 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, iPad | **iPhone, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Alejandro Cerrillo Gutierrez](https://appshunter.io/developer/1826410785) | [Zixiang Zhang](https://appshunter.io/developer/1864080804) |

## What reviewers say

### Deep Decibels

[App page](https://appshunter.io/ios/app/deep-decibels/id6748611031)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $2.99 | per month |
| Premium Access | $19.99 | per year |


### Rhylm

[App page](https://appshunter.io/ios/app/rhylm/id6757115790)

**In-app purchases:** none


## Frequently asked questions

### Is Deep Decibels free?

Deep Decibels is free to download, with in-app purchases available.

### Is Rhylm free?

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

### Do Deep Decibels or Rhylm have ads?

Neither Deep Decibels nor Rhylm shows ads.

### Which is updated more often, Deep Decibels or Rhylm?

Deep Decibels ships an update every 2 weeks, and Rhylm every 5 days. Most recently, Deep Decibels was updated on October 9, 2026 and Rhylm on October 15, 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.*