# BDM Tool vs FixM4A

The clearest difference is in-app purchases: BDM Tool at none against FixM4A's 1. FixM4A's advantage is update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. FixM4A sells 1 one-off in-app purchase. BDM Tool asks for nothing beyond the download.

BDM Tool ships an update monthly, FixM4A every 4 days. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | BDM Tool | FixM4A |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 11 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jian Ying Huaung](https://appshunter.io/developer/1671676468) | [Newkline Co., Ltd.](https://appshunter.io/developer/581922117) |

## What reviewers say

### BDM Tool

[App page](https://appshunter.io/ios/app/bdm-tool/id1671676466)

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

**In-app purchases:** none


### FixM4A

[App page](https://appshunter.io/ios/app/fixm4a/id6743666599)

This utility tool aims to recover unplayable M4A audio files corrupted by truncation or damage. It extracts and converts available data from damaged files to restore them. Users select the corrupted file and a similar good file to initiate the repair process.

**Highlights:** Repair truncated M4A files, Recover corrupted audio, Extract data from damaged files, Convert restored audio, User-friendly repair process

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fix M4A | $3.99 | one-time |


## Frequently asked questions

### Is BDM Tool free?

BDM Tool is free to download, with no in-app purchases.

### Is FixM4A free?

FixM4A is free to download, with in-app purchases available.

### Do BDM Tool or FixM4A have ads?

Neither BDM Tool nor FixM4A shows ads.

### Which is updated more often, BDM Tool or FixM4A?

BDM Tool ships an update monthly, and FixM4A every 4 days. Most recently, BDM Tool was updated on September 15, 2026 and FixM4A on September 19, 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.*