# Surface Explorer vs Black Hole

Surface Explorer and Black Hole 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 | Surface Explorer | Black Hole |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/black-hole-horizon/id6818281799/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | — | Free |
| Size | 62 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GAETANO MOSCHETTI](https://appshunter.io/developer/6787015299) | [john nelson](https://appshunter.io/developer/1343238379) |

## What reviewers say

### Surface Explorer

[App page](https://appshunter.io/ios/app/surface-explorer/id6787015297)

**Features:** Vision Pro support

**In-app purchases:** none


### Black Hole

[App page](https://appshunter.io/ios/app/black-hole-horizon/id6818281799)

Explore a realistic black hole simulation rendered in real-time. Witness the effects of general relativity, including lensing, photon rings, and Doppler beaming. Adjust parameters like spin and disk temperature, and navigate with intuitive gestures.

**Highlights:** Real-time GPU rendering, Kerr spacetime ray tracing, Adjustable black hole spin, Adjustable disk temperature, Intuitive touch controls, Cinematic tour mode, Live physics readouts

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

**In-app purchases:** none


## Frequently asked questions

### Is Surface Explorer free?

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

### Is Black Hole free?

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

### Do Surface Explorer or Black Hole have ads?

Neither Surface Explorer nor Black Hole 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.*