# Blue Filter vs Black Wallpapers 4K

The clearest difference is in-app purchases: Blue Filter at none against Black Wallpapers 4K's 3. Blue Filter also leads on ads (none vs shown) and iOS requirement (11.0 vs 13.0). On price and device support there is nothing between them.

Both are free to download. Black Wallpapers 4K sells 3 in-app purchases, starting at $2.99 per 7 days. Blue Filter asks for nothing beyond the download.

## The numbers

| Metric | Blue Filter | Black Wallpapers 4K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/black-wallpapers-4k/id6753000139/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 59 MB | 47 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Accessline Company For Technological Investment & General Trade](https://appshunter.io/developer/1579153284) | [Sulman Hussain Khan](https://appshunter.io/developer/1688168453) |

## What reviewers say

### Blue Filter

[App page](https://appshunter.io/ios/app/blue-filter/id1617701866)

**Features:** macOS Compatibility

**In-app purchases:** none


### Black Wallpapers 4K

[App page](https://appshunter.io/ios/app/black-wallpapers-4k/id6753000139)

Discover a vast collection of elegant and modern black wallpapers in HD and 4K resolution. Enhance your iPhone's look with live, AMOLED, and dark aesthetic designs, updated daily for a fresh, premium feel.

**Highlights:** Thousands of HD and 4K black wallpapers, Live and dynamic wallpaper options, AMOLED wallpapers for battery saving, Dark aesthetic and minimal designs, Daily updates with fresh backgrounds, Easy one-tap set and save functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $2.99 | per 7 days |
| Monthly subscription | $5.99 | per month |
| Yearly subscription | $19.99 | per year |


## Frequently asked questions

### Is Blue Filter free?

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

### Is Black Wallpapers 4K free?

Black Wallpapers 4K is free to download, with in-app purchases available.

### Do Blue Filter or Black Wallpapers 4K have ads?

Black Wallpapers 4K shows ads; Blue Filter does not.

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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.*