# NOVA Black Hole Apocalypse vs Stars Units Sizes Objects

The clearest difference is rating: Stars Units Sizes Objects at 4.3 against NOVA Black Hole Apocalypse's 3.5. Stars Units Sizes Objects also leads on review sentiment (80% vs 50%) and update cadence (every 4 months vs every 10 months). NOVA Black Hole Apocalypse's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price 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.

Stars Units Sizes Objects holds the better App Store score, 4.3 against 3.5. That said, the two scores are not equally well evidenced: NOVA Black Hole Apocalypse has 54 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of NOVA Black Hole Apocalypse's written reviews are positive against 80% of Stars Units Sizes Objects's.

NOVA Black Hole Apocalypse ships an update every 10 months, Stars Units Sizes Objects every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | NOVA Black Hole Apocalypse | Stars Units Sizes Objects |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (54 ratings)](https://appshunter.io/ios/app/nova-black-hole-apocalypse/id1114574985/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571/reviews)** |
| Number of ratings | **54** | 6 |
| Positive reviews | 50.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 4 months** |
| Monetization | **Free** | Ad-supported |
| Size | 372 MB | 124 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PBS](https://appshunter.io/developer/329374179) | [Mudarmeen Munlin](https://appshunter.io/developer/1348165664) |

## What reviewers say

### NOVA Black Hole Apocalypse

[App page](https://appshunter.io/ios/app/nova-black-hole-apocalypse/id1114574985)

Guide a star through spacetime, navigating cosmic hazards to become a black hole. After playing over 50 levels, watch a documentary on black holes hosted by an astrophysicist.

**Highlights:** Over 50 levels, Stellar evolution simulation, Cosmic hazard navigation, Black hole formation, Accompanying documentary, Astrophysicist-hosted content

**In-app purchases:** none


### Stars Units Sizes Objects

[App page](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571)

Explore the vastness of the universe, from the smallest particles to the largest cosmic structures. Compare object sizes, view detailed images, and perform unit conversions across a wide range of astronomical scales. Learn about stars, galaxies, and the incredible distances between them.

**Highlights:** Compare object sizes, View object images, Pinch/Zoom and Pan images, Unit conversion for distances, Explore scales from Planck length to observable universe, Learn about stars and galaxies

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

**In-app purchases:** none


## Frequently asked questions

### Is NOVA Black Hole Apocalypse free?

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

### Is Stars Units Sizes Objects free?

Stars Units Sizes Objects is free to download, with no in-app purchases.

### Which has better reviews, NOVA Black Hole Apocalypse or Stars Units Sizes Objects?

Stars Units Sizes Objects is rated higher. NOVA Black Hole Apocalypse averages 3.5 out of 5 from 54 ratings, while Stars Units Sizes Objects averages 4.3 from 6 ratings.

### Do NOVA Black Hole Apocalypse or Stars Units Sizes Objects have ads?

Stars Units Sizes Objects shows ads; NOVA Black Hole Apocalypse does not.

### Which is updated more often, NOVA Black Hole Apocalypse or Stars Units Sizes Objects?

NOVA Black Hole Apocalypse ships an update every 10 months, and Stars Units Sizes Objects every 4 months. Most recently, NOVA Black Hole Apocalypse was updated on November 2, 2026 and Stars Units Sizes Objects on November 3, 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.*