# DU20 vs SUBAMPBT

DU20 and SUBAMPBT are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | DU20 | SUBAMPBT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 14 MB | 18 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [科 李](https://appshunter.io/developer/1098552099) | [Formosa Audiomate](https://appshunter.io/developer/989721407) |

## What reviewers say

### DU20

[App page](https://appshunter.io/ios/app/du20-mixer/id1562137659)

**Features:** macOS Compatibility

**In-app purchases:** none


### SUBAMPBT

[App page](https://appshunter.io/ios/app/subampbt-1/id6776954079)

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

**In-app purchases:** none


## Frequently asked questions

### Is DU20 free?

DU20 is free to download, with no in-app purchases.

### Is SUBAMPBT free?

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

### Do DU20 or SUBAMPBT have ads?

Neither DU20 nor SUBAMPBT 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.*