Comparison

Juno vs Spaceflight Simulator

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

Head to head
About

Juno

Design, build, and fly rockets, planes, and more with realistic physics. Automate your creations with a visual programming language, explore planets, and manage your own aerospace company in a detailed career mode. Share your designs with a vibrant community.

Highlights
  • Build rockets, planes, cars, and more
  • Visual programming language (Vizzy)
  • Realistic physics simulation
  • Career mode with tech tree
  • Resize and reshape parts
  • Customizable engines
  • Community craft downloads
Features
Read full description

Bring to life anything you can imagine from rockets and airplanes to cars and more. Automate them with a visual programming language. Explore 3D planets and download more from the community. Share your creations online. Complete contracts, conquer milestones, and unlock technology in the newly added Career Mode. 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. 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, jet engines, etc to fit your needs. Paint your craft custom colors and tweak their reflectiveness, emissiveness, and texture styles. DESIGN ROCKET AND JET ENGINES Engines can be adjusted in a myriad of ways, such as changing the power cycle, combustion pressure, gimbal range, fuel type, and adjusting nozzle performance and visuals. You can customize an engine to be a power house for lift off, or to be a super optimized vacuum engine that maximizes Isp for interplanetary travel. The engine's performance affects its visuals in flight too as shown by the exhaust's expansion or contraction based on its interplay with the atmospheric pressure. Shock diamonds are pretty but they are a symptom of suboptimal engine performance! If you don't care about any of this, then you can just attach a pre-built engine and hit launch! PROGRAM YOUR CRAFTS Easily drag and drop code blocks to program your crafts to log telemetry, automate them, design your own MFD touch screens, etc. With Vizzy, a programming language designed specifically for Juno: New Origins, you can expand the capabilities of your crafts while learning programming, maths, physics, etc. 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. DOWNLOAD CRAFTS, SANDBOXES, AND MORE Download from a huge collection of user-uploaded crafts, sandboxes, and planets on 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.

About

Spaceflight Simulator

Build and launch rockets to explore a realistic, open universe. Experience space exploration with accurate physics and a vast, explorable solar system.

Highlights
  • Build custom rockets
  • Realistic orbital mechanics
  • Explore a scaled universe
  • Visit planets and moons
  • Open-world space exploration
  • Real-life physics simulation
Read full description

This game is about space explorations, its about building your own rocket, and going out to explore and see whats out there, all while following real life physics. • Realistically scaled universe, with planets up to hundreds of kilometers in size and millions of kilometers of space between them. • Realistic orbital mechanics • Open universe, if you see something in the distance, you can go there, no limits, no invisible walls. Current planets: Mercury. Venus. Earth. Moon. Mars. Phobos. Deimos.

Screenshots

Juno4 screens
Spaceflight Simulator4 screens

Verdict

The call

The clearest difference is price: Spaceflight Simulator at Free against Juno's $6.99. Spaceflight Simulator also leads on rating (4.8 vs 4.4) and ratings volume (98K vs 1.2K). Juno's advantage is in-app purchases (none vs 11). On review sentiment, ads, device support and iOS requirement 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

Spaceflight Simulator is free to download; Juno costs $6.99 up front. Spaceflight Simulator sells 10 one-off in-app purchases. Juno asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spaceflight Simulator holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Spaceflight Simulator has 98K ratings behind it against 1.2K, so its average is the more settled of the two. Written reviews point the same way: 78% of Juno's written reviews are positive against 85% of Spaceflight Simulator's.

UpkeepUpdate frequency

Juno ships an update monthly, Spaceflight Simulator every 9 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Juno versus Spaceflight Simulator: the parameters behind the verdict, then further details
ParameterJunoSpaceflight Simulator
Price$6.99Free — better
Rating4.4 (1.2K ratings)4.8 (98K ratings) — better
Positive reviews78.2% of reviews85.3% of reviews — better
Number of ratings1.2K98K — better
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS14.0 — better15.0
Further details — not scored
Size371 MB172 MB
Age rating4+4+
DeveloperJundroo, LLCSpaceflight Simulator UK Ltd

Customer experience

Juno

All ratings1,201 ratings
Positive83.9%
Neutral4.6%
Negative11.5%
Written reviews545 reviews
Positive78.2%
Neutral7.9%
Negative13.9%

Spaceflight Simulator

All ratings97,665 ratings
Positive96.3%
Neutral1.7%
Negative2.0%
Written reviews4,884 reviews
Positive85.3%
Neutral5.1%
Negative9.6%

User reviews

Juno

From 1.2K App Store ratings

What we love

  • 🚀 Realistic physics and graphics
  • 🔍 Highly customizable parts and designs
  • 🔬 Detailed space simulation experience
  • 👍 Smooth performance on mobile devices
  • 💡 Innovative programming/scripting features

Room to improve

  • 🐛 Frequent crashes and stability issues
  • 🕹️ Clunky and unintuitive controls, especially for building
  • 📚 Lack of comprehensive tutorials and documentation
  • 🔧 Challenging learning curve for newcomers

Spaceflight Simulator

From 98K App Store ratings

What we love

  • 🚀 Realistic physics and space simulation
  • 👍 Intuitive controls and easy to learn
  • 🚀 Ability to build complex rockets and spacecraft
  • 👍 No ads or in-app purchases required to play

Room to improve

  • 🐛 Occasional bugs and glitches, especially with large rockets
  • 🔋 Potential performance issues on older devices
  • 🔒 Limited customization and part options in free version
  • 🚀 Docking and rendezvous maneuvers can be very challenging

Bugs and requests

Juno

Reported bugs

4 issues
  • Staging and separation issues
  • Parachute and re-entry physics problems
  • Inconsistent performance on different devices
  • Difficulty downloading and using community creations

Requested features

6 requests
  • More built-in tutorials and guidance
  • Improved camera controls and UI
  • Ability to create custom planets/moons
  • Expanded part selection and customization
  • Career mode with progression and challenges
Show 1 more
  • Multiplayer and collaborative building

Spaceflight Simulator

Reported bugs

4 issues
  • Rocket parts sometimes clipping through each other
  • Occasional freezing or crashing when launching large rockets
  • Issues with RCS thrusters firing unexpectedly during docking
  • Problems with maintaining stable orbits and transfers

Requested features

6 requests
  • Add more planets, moons, and celestial bodies to explore
  • Implement a career mode or progression system with challenges
  • Allow for more customization of rocket parts and spacecraft
  • Improve docking and rendezvous mechanics to make them more accessible
  • Add the ability to control individual astronauts and perform EVAs
Show 1 more
  • Implement a fuel line system for more efficient staging

In-app purchases

None

Juno

No in-app purchases

10 purchases

Spaceflight Simulator

One-time10
  • Skins Expansion$2.99
  • Full Version$3.99
  • Redstone + Atlas Pack$3.99
Show 7 more
  • Parts Expansion$4.99
  • Infinite Area Expansion$4.99
  • Expansion Bundle$7.99
  • Cheats Expansion$9.99
  • Full Bundle Upgrade$9.99
  • Full Bundle$11.99
  • Full Bundle$14.99

Questions

Is Juno free?
Juno costs $6.99, with no in-app purchases.
Is Spaceflight Simulator free?
Spaceflight Simulator is free to download, with in-app purchases available.
Which has better reviews, Juno or Spaceflight Simulator?
Spaceflight Simulator is rated higher. Juno averages 4.4 out of 5 from 1.2K ratings, while Spaceflight Simulator averages 4.8 from 98K ratings.
Do Juno or Spaceflight Simulator have ads?
Neither Juno nor Spaceflight Simulator shows ads.
Which is updated more often, Juno or Spaceflight Simulator?
Juno ships an update monthly, and Spaceflight Simulator every 9 days. Most recently, Juno was updated on October 29, 2026 and Spaceflight Simulator on October 30, 2026.

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