# Omni Relprev vs Noise

The clearest difference is update cadence: Omni Relprev at every 3 months against Noise's every 10 months. Omni Relprev also leads on iOS requirement (9.0 vs 13.0). 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.

Omni Relprev ships an update every 3 months, Noise every 10 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Omni Relprev | Noise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (54 ratings)](https://appshunter.io/ios/app/noise/id1462215395/reviews)** |
| Number of ratings | — | **54** |
| Positive reviews | — | 72.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | — | Free |
| Size | 25 MB | 3 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [VILAAPPS DESENVOLVIMENTO DE SISTEMAS LTDA](https://appshunter.io/developer/1594697114) | [Apple](https://appshunter.io/developer/284417353) |

## What reviewers say

### Omni Relprev

[App page](https://appshunter.io/ios/app/omni-relprev/id1434690340)

**Features:** macOS Compatibility

**In-app purchases:** none


### Noise

[App page](https://appshunter.io/ios/app/noise/id1462215395)

This app monitors your environment's decibel levels using your Apple Watch. It provides real-time feedback on sound intensity, alerting you to potentially harmful noise exposure and noting when sound levels decrease with compatible headphones.

**Highlights:** Real-time decibel level monitoring, Hearing health alerts, Watch face complications, Sound level reduction notifications with AirPods, Periodic sound sampling

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Omni Relprev free?

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

### Is Noise free?

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

### Do Omni Relprev or Noise have ads?

Neither Omni Relprev nor Noise shows ads.

### Which is updated more often, Omni Relprev or Noise?

Omni Relprev ships an update every 3 months, and Noise every 10 months. Most recently, Omni Relprev was updated on October 22, 2026 and Noise on October 24, 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.*