# MDA931 vs BLAM DSP 4

The clearest difference is iOS requirement: BLAM DSP 4 at 9.0 against MDA931's 12.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | MDA931 | BLAM DSP 4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 4 MB | 2 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [BLAM](https://appshunter.io/developer/1117883429) |

## What reviewers say

### MDA931

[App page](https://appshunter.io/ios/app/mda931/id6470818095)

**Features:** macOS Compatibility

**In-app purchases:** none


### BLAM DSP 4

[App page](https://appshunter.io/ios/app/blam-dsp-4/id6488414900)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MDA931 free?

MDA931 is free to download, with no in-app purchases.

### Is BLAM DSP 4 free?

BLAM DSP 4 is free to download, with no in-app purchases.

### Do MDA931 or BLAM DSP 4 have ads?

Neither MDA931 nor BLAM DSP 4 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.*