Gravity! vs NOVA Black Hole Apocalypse
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gravity!
Simulate the forces of gravity by flinging particles and observing their interactions. Create celestial bodies like planets and black holes, and customize their properties. Explore vast cosmic simulations with intuitive zoom and pan controls.
- Gravity simulation
- Particle interaction
- Create solar systems
- Add black holes
- Adjust particle properties
- Zoom and pan controls
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This app simulates the effects of gravity. You can fling particles at each other and watch them interact. Create solar systems and galaxies! Make a planet and fling asteroids into it! Add a black hole and watch everything get sucked in! You can adjust the size, mass, and color of the particles! Zoom in and out and look around with two fingers! App Preview Music: "Mesmerizing Galaxy " Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/
NOVA Black Hole Apocalypse
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.
- Over 50 levels
- Stellar evolution simulation
- Cosmic hazard navigation
- Black hole formation
- Accompanying documentary
- Astrophysicist-hosted content
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Start with a star and play over 50 levels to watch it become a black hole. Hurl your star across spacetime to hit your target. Navigate fields of cosmic objects and hazards—like neutron stars and quasars—avoiding some and slingshotting around others in your quest to become more massive. Reach the end and your star collapses….to become a black hole. Then watch the two-hour NOVA program, “Black Hole Apocalypse,” hosted by astrophysicist Janna Levin.
Screenshots
Verdict
The clearest difference is in-app purchases: NOVA Black Hole Apocalypse at none against Gravity!'s 1. NOVA Black Hole Apocalypse also leads on iOS requirement (9.0 vs 15.6). Gravity!'s advantage is update cadence (every 2 months vs every 10 months) and review sentiment (74% vs 50%). On price, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Gravity! sells 1 one-off in-app purchase. NOVA Black Hole Apocalypse asks for nothing beyond the download.
Gravity! holds the better App Store score, 3.9 against 3.6. Both are backed by a comparable volume of ratings — 18 and 53 respectively. Written reviews point the same way: 74% of Gravity!'s written reviews are positive against 50% of NOVA Black Hole Apocalypse's.
Gravity! ships an update every 2 months, NOVA Black Hole Apocalypse every 10 months. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.
| Parameter | Gravity! | NOVA Black Hole Apocalypse |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (18 ratings) — better | 3.6 (53 ratings) |
| Positive reviews | 73.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 18 | 53 — better |
| Update frequency | Every 2 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 372 MB |
| Age rating | 4+ | 4+ |
| Developer | Marc Davis | PBS |
Customer experience
Gravity!
NOVA Black Hole Apocalypse
In-app purchases
Gravity!
- Gravity! Extended Edition$0.99
NOVA Black Hole Apocalypse
No in-app purchases
Questions
Is Gravity! free?
Is NOVA Black Hole Apocalypse free?
Which has better reviews, Gravity! or NOVA Black Hole Apocalypse?
Do Gravity! or NOVA Black Hole Apocalypse have ads?
Which is updated more often, Gravity! or NOVA Black Hole Apocalypse?
Other comparisons
