# Terrigen vs Decibel meter test

The clearest difference is in-app purchases: Terrigen at none against Decibel meter test's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Decibel meter test sells 1 in-app purchase, starting at $6.99 per 7 days. Terrigen asks for nothing beyond the download.

Terrigen ships an update every 5 weeks, Decibel meter test every 4 weeks. The most recent releases landed on September 16, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Terrigen | Decibel meter test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/decibel-meter-test/id6742873854/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 weeks** |
| Monetization | — | Freemium |
| Size | 207 MB | 37 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Orbify Poland Sp. z o.o.](https://appshunter.io/developer/1704842179) | [玉珍 李](https://appshunter.io/developer/1547803211) |

## What reviewers say

### Terrigen

[App page](https://appshunter.io/ios/app/terrigen/id6463726975)

**In-app purchases:** none


### Decibel meter test

[App page](https://appshunter.io/ios/app/decibel-meter-test/id6742873854)

This tool measures environmental noise levels in real-time, records test history, and helps manage noisy surroundings. It offers precise decibel readings and scene capture for analysis.

**Highlights:** Real-time decibel testing, Surrounding noise detection, Scene capture with noise levels, Automatic test record saving, Historical measurement analysis, Simple and easy to use

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One week membership | $6.99 | per 7 days |


## Frequently asked questions

### Is Terrigen free?

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

### Is Decibel meter test free?

Decibel meter test is free to download, with in-app purchases available.

### Do Terrigen or Decibel meter test have ads?

Neither Terrigen nor Decibel meter test shows ads.

### Which is updated more often, Terrigen or Decibel meter test?

Terrigen ships an update every 5 weeks, and Decibel meter test every 4 weeks. Most recently, Terrigen was updated on September 16, 2026 and Decibel meter test on September 10, 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.*