# Pocket Black Hole vs ViscousJoukowski

The clearest difference is device support: Pocket Black Hole at 3 against ViscousJoukowski's 1. Pocket Black Hole also leads on iOS requirement (8.0 vs 17.0). On price, ads and in-app purchases 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 | Pocket Black Hole | ViscousJoukowski |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (13 ratings)](https://appshunter.io/ios/app/pocket-black-hole/id1076013855/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | — |
| Monetization | Free | — |
| Size | 55 MB | 16 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Laser Labs](https://appshunter.io/developer/1076013854) | [ManneTroll Solutions](https://appshunter.io/developer/313743954) |

## What reviewers say

### Pocket Black Hole

[App page](https://appshunter.io/ios/app/pocket-black-hole/id1076013855)

Simulate the light-bending effects of a black hole on your photos. Capture selfies or images of friends with a black hole distortion using a simplified visual effect.

**Highlights:** Simulate black hole light bending, Apply distortion to photos, Use selfies or friend photos, Simplified visual effect

**Features:** macOS Compatibility

**In-app purchases:** none


### ViscousJoukowski

[App page](https://appshunter.io/ios/app/viscousjoukowski/id6806776003)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pocket Black Hole free?

Pocket Black Hole is free to download, with no in-app purchases.

### Is ViscousJoukowski free?

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

### Do Pocket Black Hole or ViscousJoukowski have ads?

Neither Pocket Black Hole nor ViscousJoukowski 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.*