# Unit Converter Max vs MP3 Converter

The clearest difference is monetization model: Unit Converter Max at free against MP3 Converter's free with in-app purchases. Unit Converter Max also leads on ratings volume (26 vs 1). MP3 Converter's advantage is update cadence (weekly vs every 3 weeks). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Unit Converter Max sells 1 one-off in-app purchase and MP3 Converter sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Unit Converter Max against 5.0 for MP3 Converter. That said, the two scores are not equally well evidenced: Unit Converter Max has 26 ratings behind it against 1, so its average is the more settled of the two.

Unit Converter Max ships an update every 3 weeks, MP3 Converter weekly. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Unit Converter Max | MP3 Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (26 ratings)](https://appshunter.io/ios/app/unit-converter-max/id6747881604/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/mp3-converter-ringtone-maker-plus/id6752532441/reviews) |
| Number of ratings | **26** | 1 |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 36 MB | 47 MB |
| Requires iOS | 17.0 | 17 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rich Soft Co., Ltd](https://appshunter.io/developer/1499019813) | [应芳 卢](https://appshunter.io/developer/1742092879) |

## What reviewers say

### Unit Converter Max

[App page](https://appshunter.io/ios/app/unit-converter-max/id6747881604)

This app offers fast and accurate conversions for over 30 unit categories and 150 world currencies. It features a clean interface, offline functionality, and light/dark modes, designed for travel, work, and everyday calculations.

**Highlights:** 30+ unit categories, 150+ world currencies, Offline unit conversion, Clean, easy-to-read interface, Light and dark mode, Fast and accurate results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Converter Lifetime | $4.99 | one-time |


### MP3 Converter

[App page](https://appshunter.io/ios/app/mp3-converter-ringtone-maker-plus/id6752532441)

This app is a comprehensive audio editing tool that allows for easy conversion between various audio formats, extraction of audio from videos, and precise trimming of music for ringtones. It offers batch processing and speed adjustment for efficient audio manipulation.

**Highlights:** Convert between 18 audio formats, Extract audio from videos, Millisecond-accurate audio trimming, Batch audio processing, Adjust export playback speed, Import from multiple sources

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $2.99 | per year |
| Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Unit Converter Max free?

Unit Converter Max is free to download, with in-app purchases available.

### Is MP3 Converter free?

MP3 Converter is free to download, with in-app purchases available.

### Which has better reviews, Unit Converter Max or MP3 Converter?

Unit Converter Max and MP3 Converter are both rated 5.0 out of 5 on the App Store, from 26 and 1 ratings respectively.

### Do Unit Converter Max or MP3 Converter have ads?

Neither Unit Converter Max nor MP3 Converter shows ads.

### Which is updated more often, Unit Converter Max or MP3 Converter?

Unit Converter Max ships an update every 3 weeks, and MP3 Converter weekly. Most recently, Unit Converter Max was updated on September 23, 2026 and MP3 Converter on September 9, 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.*