# ContractShield vs Opus to MP3 Converter

The clearest difference is in-app purchases: Opus to MP3 Converter at none against ContractShield's 2. Opus to MP3 Converter also leads on iOS requirement (15.1 vs 17.0). ContractShield's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. ContractShield sells 2 in-app purchases, starting at $7.99 per month. Opus to MP3 Converter asks for nothing beyond the download.

## The numbers

| Metric | ContractShield | Opus to MP3 Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Size | 3 MB | 35 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [贺 周](https://appshunter.io/developer/1815397078) | [Vilva Athiban P B](https://appshunter.io/developer/1694185074) |

## What reviewers say

### ContractShield

[App page](https://appshunter.io/ios/app/contractshield/id6763211159)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ContractShield Pro Monthly | $7.99 | per month |
| ContractShield Pro Yearly | $49.99 | per year |


### Opus to MP3 Converter

[App page](https://appshunter.io/ios/app/opus-to-mp3-converter/id6810373840)

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

**In-app purchases:** none


## Frequently asked questions

### Is ContractShield free?

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

### Is Opus to MP3 Converter free?

Opus to MP3 Converter is free to download, with no in-app purchases.

### Do ContractShield or Opus to MP3 Converter have ads?

Opus to MP3 Converter shows ads; ContractShield 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.*