# Decibel Meter° vs Transforma

The clearest difference is in-app purchases: Decibel Meter° at none against Transforma's 1. Decibel Meter° also leads on iOS requirement (13.0 vs 17.0). Transforma's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Transforma sells 1 one-off in-app purchase. Decibel Meter° asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter° | Transforma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Weekly |
| Size | 66 MB | 15 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zancore Systems s.r.o.](https://appshunter.io/developer/1581624529) | [Pawel Zalewski](https://appshunter.io/developer/1874588478) |

## What reviewers say

### Decibel Meter°

[App page](https://appshunter.io/ios/app/decibel-meter/id6759850836)

**Features:** macOS Compatibility

**In-app purchases:** none


### Transforma

[App page](https://appshunter.io/ios/app/transforma-file-converter/id6759878514)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Conversions | $1.99 | one-time |


## Frequently asked questions

### Is Decibel Meter° free?

Decibel Meter° is free to download, with no in-app purchases.

### Is Transforma free?

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

### Do Decibel Meter° or Transforma have ads?

Decibel Meter° shows ads; Transforma does not.

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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.*