Comparison

Juno vs Gravity Physics

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Juno

Build and test rockets, planes, and cars with realistic physics in a 3D aerospace sandbox. Progress through a career mode, unlock new technology, and share your creations with a global community.

Highlights
  • 3D aerospace sandbox
  • Realistic physics simulation
  • Career mode with tech tree
  • Customizable part resizing and reshaping
  • Download and share user-created crafts
  • Realistic orbit simulation
  • Interactive tutorials
Features
Read full description

Juno: New Origins is a 3D aerospace simulator where players can build and test rockets, planes, cars, or anything they can imagine in an environment with realistic physics across land, sea, air, and space. This is the free-to-play version, including most of the content from the Complete Edition, with the rest being available to purchase as 3 individual bundles right from the app. If you would prefer a one-time purchase, please check out "Juno: New Origins Complete Ed." on the App Store. AEROSPACE SANDBOX Juno: New Origins is a 3D aerospace sandbox where players can use customizable parts to construct and test rockets, planes, cars, or anything they can imagine in an environment with realistic physics across land, sea, air, and space, and a vast system to explore. CAREER MODE + TECH TREE Take control of your own aerospace company and earn money and tech points as you progress through the game. Complete contracts to earn money, and discover a mixture of hand-crafted and procedural contracts that offer countless hours of new gameplay. Conquer milestones and explore landmarks to earn tech points and unlock new technology in the tech tree. Interactive tutorials are available to show how to build and operate rockets, cars, and airplanes. RESIZE AND RESHAPE PARTS Stretch and shape fuel tanks, wings, cargo bays, fairings, and nose cones with easy-to-use tools that help you create exactly what you want. Resize solar panels, landing gear, pistons, etc to fit your needs. Paint your craft custom colors and textures, and even change the material properties to make it transparent, metallic and even shiny. DOWNLOAD CRAFTS AND SHARE Download from a huge collection of user-uploaded crafts and sandboxes on https://simplerockets.com. Upload your own crafts and sandboxes and share them with the community. Rise through the ranks from a white level builder to a gold level builder and beyond and make friends from all around the world. REALISTIC ORBIT SIMULATION Orbits are realistically simulated and support time-warp so you don't have to wait several months to reach another planet. The Map View makes it easy to see your orbits and plan future burns, which you can use to set up future encounters with other planets or satellites. UPGRADE YOUR EXPERIENCE Bring your game to a next level with bundles that adapt to your playing style. Customize and automate your crafts with the Engineer Bundle, break physics and unleash your wildest designs with the Sandbox Bundle, or conquer the Juno System and become rich with the Career Bundle. ENGINEER BUNDLE * Become an engineer Easily tweak the parameters that define both the looks and function of rocket engines, jet engines, propellers and wheels * Become a programmer Automate your crafts with an easy to use visual programming language called Vizzy * Become a designer Create subassemblies to use them as templates when creating your crafts SANDBOX BUNDLE * Unleash the beast Get access to all the in-flight cheats such as infinite fuel and teleport, and the designer's Tinker Panel madness allowing you to change hundreds of hidden parameters * Get the full sandbox experience Get access to all the planets and launch locations in sandbox mode and keep as many crafts in flight as you want to conquer the Juno System * Explore community systems Choose between hundreds of custom systems made by other players and get ready to explore them in a couple clicks CAREER BUNDLE * Meet 3 new customers Professor von Pricklespac, General Chuck Schafer and the director of the Droo Space Center, Evelyn Shotwell * Dozens of new unique contracts Unlock new launch locations, bring payloads to orbit, explore the planets and moons of Juno... and many other new challenges to beat * Complete your career * Unlock the full Tech Tree and visit all the landmarks in the Juno System

About

Gravity Physics

Features
Read full description

Gravity is a real-time N-body physics simulation of our solar system — fly a spacecraft through accurately modeled orbits, gravity wells, and atmospheres, all rendered in a clean top-down view of the ecliptic plane. Every body uses real physical data: mass, radius, orbital elements, and atmospheric density where applicable. Gravity between all 26 bodies — Sun, planets, major moons, and dwarf planets — is computed live using velocity Verlet integration, so orbits, perturbations, and gravity assists emerge naturally from physics, not scripted paths. FEATURES • Pilot your own spacecraft — configure engine count, thrust, and mass, then launch from Earth • True N-body gravity — every body pulls on every other body and on your ship, in real time • Realistic atmospheric drag and heating — feel the difference between skimming Earth's atmosphere and diving into Venus or Saturn • Time controls — speed up months of orbital motion or slow down to precision-dock in real time • Trajectory prediction — see where your current heading will take you before you commit • Flight trail — trace your path across millions of kilometers • Extended telemetry — track speed, altitude, gravity, thrust-to-weight ratio, dynamic pressure, hull temperature, time dilation, and more Whether you want to attempt a Hohmann transfer to Mars, slingshot past Jupiter, or just watch the Moon orbit Earth in fast-forward, Gravity gives you a physically accurate sandbox to explore the mechanics of our solar system.

Screenshots

Juno4 screens
Gravity Physics4 screens

Verdict

The call

The clearest difference is in-app purchases: Gravity Physics at none against Juno's 4. Gravity Physics also leads on ads (none vs shown) and update cadence (weekly vs monthly). Juno's advantage is iOS requirement (14.0 vs 17.6). On price and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Juno sells 4 one-off in-app purchases. Gravity Physics asks for nothing beyond the download.

UpkeepUpdate frequency

Juno ships an update monthly, Gravity Physics weekly. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
Juno versus Gravity Physics: the parameters behind the verdict, then further details
ParameterJunoGravity Physics
PriceFreeFree
Rating3.8 (321 ratings) — better—
Positive reviews61.8% of reviews—
Number of ratings321 — better—
Update frequencyMonthlyWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.6
Further details — not scored
Size412 MB6 MB
Age rating4+4+
DeveloperJundroo, LLCZoltan Homorodi

Bugs and requests

Juno

Reported bugs

5 issues
  • Engines not igniting properly
  • Inability to restore purchases
  • Sandbox mode missing key parts
  • Severe performance issues on some devices
  • Inconsistent part movement and attachment

Requested features

5 requests
  • Add more plane and rocket parts
  • Improve mobile optimization and controls
  • Implement a more comprehensive tutorial system
  • Add a 'delete all' or 'clear' option
  • Introduce a free sandbox mode with all features unlocked

Gravity Physics

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Juno

One-time4
  • Engineer Bundle$0.99
  • Remove Ads$1.99
  • Sandbox Bundle$2.99
Show 1 more
  • Career Bundle$4.99
None

Gravity Physics

No in-app purchases

Questions

Is Juno free?
Juno is free to download, with in-app purchases available.
Is Gravity Physics free?
Gravity Physics is free to download, with no in-app purchases.
Do Juno or Gravity Physics have ads?
Juno shows ads; Gravity Physics does not.
Which is updated more often, Juno or Gravity Physics?
Juno ships an update monthly, and Gravity Physics weekly. Most recently, Juno was updated on October 20, 2026 and Gravity Physics on October 6, 2026.

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