# Volumi vs TRN Audio

The clearest difference is in-app purchases: TRN Audio at none against Volumi's 1. TRN Audio also leads on iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Volumi sells 1 one-off in-app purchase. TRN Audio asks for nothing beyond the download.

## The numbers

| Metric | Volumi | TRN Audio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 2 MB | 34 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [波 张](https://appshunter.io/developer/6777857130) | [娟 伍](https://appshunter.io/developer/6793145741) |

## What reviewers say

### Volumi

[App page](https://appshunter.io/ios/app/volumi/id6779463025)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Volumi Pro | $1.99 | one-time |


### TRN Audio

[App page](https://appshunter.io/ios/app/trn-audio/id6798907124)

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

**In-app purchases:** none


## Frequently asked questions

### Is Volumi free?

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

### Is TRN Audio free?

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

### Do Volumi or TRN Audio have ads?

Neither Volumi nor TRN Audio shows ads.

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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.*