# USDK vs VDHB

The clearest difference is update cadence: VDHB at every 6 weeks against USDK's every 9 months. USDK's advantage is iOS requirement (12.0 vs 15.0). 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.

USDK ships an update every 9 months, VDHB every 6 weeks. The most recent releases landed on September 11, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | USDK | VDHB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Size | 55 MB | 51 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [appyness agency](https://appshunter.io/developer/1185323276) | [Internet Evolution](https://appshunter.io/developer/1151758359) |

## What reviewers say

### USDK

[App page](https://appshunter.io/ios/app/usdk/id1340510341)

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

**In-app purchases:** none


### VDHB

[App page](https://appshunter.io/ios/app/vdhb/id6746938279)

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

**In-app purchases:** none


## Frequently asked questions

### Is USDK free?

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

### Is VDHB free?

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

### Do USDK or VDHB have ads?

Neither USDK nor VDHB shows ads.

### Which is updated more often, USDK or VDHB?

USDK ships an update every 9 months, and VDHB every 6 weeks. Most recently, USDK was updated on September 11, 2026 and VDHB on September 28, 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.*