# Gravity! > Gravity simulation app for creating and interacting with celestial bodies. (iPhone/iPad app by Marc Davis.) - Source: https://appshunter.io/ios/app/gravity/id738871919 (this page in markdown: same URL + `.md`) - Developer: [Marc Davis](https://appshunter.io/developer/1010892850) - Category: Education, Games, Simulation - Price: Free with in-app purchases - Rating: 3.90/5 from 18 App Store ratings · 34 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 17 MB - Languages: American English - Released: 2013-12-25 - Data updated: 2026-08-06 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/gravity/id738871919/reviews.md ## What is Gravity!? 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/ ## Key features - Gravity simulation - Particle interaction - Create solar systems - Add black holes - Adjust particle properties - Zoom and pan controls ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Gravity! Extended Edition | $0.99 | one-time | ## Recent user reviews (10 of 34) All indexed reviews: https://appshunter.io/ios/app/gravity/id738871919/reviews.md ### 4/5 — (Not) optional *2026-05-10, version 2.1.1* Add white holes (the opist of a black hole) and get 5 stars ### 5/5 — Love the Apple Watch implementation *2024-12-22* I love the… animation of a slightly eccentric orbit going round and round for all of eternity. Not to mention that the center object doesn’t move a pixel which is unrealistic! 10/10 Apple Watch support, so much fun watching the animation and… yeah! ### 5/5 — Fun. *2024-03-27, version 2.1.1* Very fun ### 4/5 — Add an update *2023-11-09* So I can’t even make things orbit each other so boring ### 5/5 — cool simulator! *2023-09-09, version 2.1.1* I keep seeing gravity demos in irl and i thought. hmmm how can i get that without money? and now im here its pretty good! ### 1/5 — I HATE THIS GAME *2023-05-11, version 2.1.1* THERE IS NO GRAVITY SCAMER ONE STAR FOR YOU ### 5/5 — One of the best apps I used to understand the gravity *2021-10-11, version 2.1.1* . ### 3/5 — Can't make a star *2020-12-07* How do I make a star put how to make a star in the tutorial ### 1/5 — It’s horrible I can’t make stars *2020-04-16* I was playing and I couldn’t make stars ### 5/5 — Music *2020-04-01, version 2.1.1* Could you just ad some music to the game? ## Frequently asked questions about Gravity! ### What does the Gravity! app do? This app simulates the effects of gravity, allowing users to fling particles and observe their interactions. You can create celestial bodies like planets, asteroids, and black holes, and customize their properties such as size, mass, and color. ### What are the key features of Gravity!? Key features include simulating gravity, particle interactions, creating solar systems and galaxies, adding black holes, adjusting particle properties (size, mass, color), and intuitive two-finger zoom and pan controls for exploration. ### Is Gravity! free to use? The app is free to download and use, but it offers in-app purchases. This means you can enjoy the core simulation features for free, with optional purchases available for additional content or features. ### What can I create with Gravity!? You can create a variety of cosmic scenarios. This includes making planets and flinging asteroids at them, forming entire solar systems and galaxies, and even introducing black holes to observe their gravitational pull on surrounding objects. ### What kind of devices is Gravity! compatible with? While specific compatibility details are not provided in the description, this app is designed for mobile devices. Users can typically expect it to run on smartphones and tablets that support its operating system. ## Version history (last 5 releases) ### 2.2 — 2026-07-29 Improved the accuracy of the physics simulation, especially when enabling rotation. ### 2.1.3 — 2026-06-16 This version (2.1.3) includes a fix for In-App Purchase issues with the previous version, as well as some minor UI improvements. The previous version (2.1.2) introduced: Experimental new feature for paid users: Orbit Assist By turning on Orbit Assist, added planets will be sent in a trajectory computed to produce a good orbit rather than just the direction you swipe. There are 3 different orbit assist strategies, and the best choice will depend on the situation. Experiment and see what works! ### 2.1.2 — 2026-06-11 Experimental new feature for paid users: Orbit Assist By turning on Orbit Assist, added planets will be sent in a trajectory computed to produce a good orbit rather than just the direction you swipe. There are 3 different orbit assist strategies, and the best choice will depend on the situation. Experiment and see what works! Also there have been improvements to Planet Trails and refinement of UI elements. ### 2.1.1 — 2016-06-24 This app has been updated by Apple to display the Apple Watch app icon. -Fixed a bug that causes the app to crash when placing planets on devices running iOS versions earlier than iOS 9.0 Undo button, improved Apple Watch support, and more are coming with the iOS 10 update in the fall. ### 2.1.0 — 2016-04-27 Another Huge Update! New Free Features: - acceleration and velocity vectors are now free - use 3DTouch to place planets of varying sizes with the same velocity on compatible devices - Apple Watch demo - bugfixes New Paid Features: - auto-center simulation (no more chasing down fleeing planets!) - full Apple Watch app (create solar systems and other simulations on the go!) In Progress: - auto-orbit (create solar systems more easily) - a feature to undo the last planet or delete planets ## Apps similar to Gravity! | App | Rating | Price | Category | | --- | --- | --- | --- | | [ViGravitatis](https://appshunter.io/ios/app/vigravitatis/id1500181187) | — | Free | Education | | [Planet Fun](https://appshunter.io/ios/app/planet-fun/id1525941640) | 4.8 (8) | Free | Education | | [Stars Units Sizes Objects](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571) | 4.2 (5) | Free | Education | | [Quantum - Particle Life](https://appshunter.io/ios/app/quantum-particle-life/id6504465371) | 4.8 (133) | Free | Education | | [Vector Field: Particle Flow](https://appshunter.io/ios/app/vector-field-particle-flow/id1598282424) | 4.5 (6) | Free | Education | | [Graviton Sim](https://appshunter.io/ios/app/graviton-sim/id6754208416) | — | Free | Education | ## More apps by Marc Davis - [Mazetron](https://appshunter.io/ios/app/mazetron/id379846421) - [Lafayette History](https://appshunter.io/ios/app/lafayette-history/id676810834) All apps by Marc Davis: https://appshunter.io/developer/1010892850 ## Related topics [gravity mega market](https://appshunter.io/ios/topics/gravity-mega-market) · [zero gravity 3d](https://appshunter.io/ios/topics/zero-gravity-3d) · [pull gravity](https://appshunter.io/ios/topics/pull-gravity) · [gravity simulator](https://appshunter.io/ios/topics/gravity-simulator) · [zero gravity it solutions](https://appshunter.io/ios/topics/zero-gravity-it-solutions) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-06.*