# MP3 Converter vs Linear Algebra

The clearest difference is in-app purchases: Linear Algebra at none against MP3 Converter's 3. MP3 Converter's advantage is update cadence (weekly vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MP3 Converter sells 3 in-app purchases, starting at $0.99 per month. Linear Algebra asks for nothing beyond the download.

MP3 Converter ships an update weekly, Linear Algebra every 5 weeks. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | MP3 Converter | Linear Algebra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mp3-converter-ringtone-maker-plus/id6752532441/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 47 MB | 73 MB |
| Requires iOS | **17** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [应芳 卢](https://appshunter.io/developer/1742092879) | [光浩 李](https://appshunter.io/developer/1576352133) |

## What reviewers say

### 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 |


### Linear Algebra

[App page](https://appshunter.io/ios/app/linear-algebra-matrix-solver/id6766080565)

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

**In-app purchases:** none


## Frequently asked questions

### Is MP3 Converter free?

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

### Is Linear Algebra free?

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

### Do MP3 Converter or Linear Algebra have ads?

Neither MP3 Converter nor Linear Algebra shows ads.

### Which is updated more often, MP3 Converter or Linear Algebra?

MP3 Converter ships an update weekly, and Linear Algebra every 5 weeks. Most recently, MP3 Converter was updated on October 12, 2026 and Linear Algebra on October 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.*