Games like Kerbal Space Program on iPhone and Android
Published 19 October 2026 · All guides
In short: Kerbal Space Program has never been released for phones. If you want to build rockets on a phone, play Spaceflight Simulator or Juno: New Origins. If what you liked about KSP was real orbits (planning burns, watching a ground track drift, running out of propellant), Celestrike is a strategy game built on those orbits instead of on rocket building. This page is written by Celestrike's developer, so we have tried to be fair to the other two.
Is Kerbal Space Program on mobile?
No. The original Kerbal Space Program, by Squad, came out on PC in 2015 and later on PlayStation and Xbox. Its developers announced in 2021 that version 1.12 would be its last major update. The sequel, Kerbal Space Program 2, entered early access on Windows in February 2023; its studio, Intercept Games, was closed in 2024 and the game has had no updates since. Neither game has an iPhone or Android version.
Spaceflight Simulator
What it is: the closest thing to KSP on a phone. You assemble rockets from parts, launch them and fly them around a simplified solar system. It was made by a solo developer, Stefo Mai Morojna, and has been downloaded tens of millions of times.
Platforms and price: iPhone, Android and PC (Steam). Free to download, with paid upgrades for the full parts list and expansions.
Pick it if: you want the build-it-and-launch-it loop of KSP in short phone sessions.
Juno: New Origins
What it is: a deeper rocket and vehicle designer from Jundroo, the makers of SimplePlanes, formerly called SimpleRockets 2. You build craft part by part, with far more freedom than Spaceflight Simulator, fly them in a physics simulation and can run a career mode.
Platforms and price: iPhone, iPad, Android and PC. There is a free version with in-app purchases and a paid Complete Edition.
Pick it if: you liked KSP's engineering most and want detailed control over what you build, ideally on a tablet.
Celestrike
What it is: a spy-satellite strategy game. You do not build or fly rockets. You run a rogue satellite programme on real Keplerian orbits: aim satellites at hidden sites, wait for the orbit to bring them over, sell the intelligence, and spend it on better hardware and more satellites. Later it becomes an arms race against foreign satellites, and then something stranger. Time follows the real clock, so a pass arrives when the orbit says it does, even with the app closed.
Platforms and price: iPhone and Android. Free, with no ads and no accounts; the only purchase is optional packs of hours that fast-forward the game clock.
Pick it if: the part of KSP you enjoyed was the orbit itself — the map view, the burn that costs more than you hoped, the way a ground track walks west — and you want a game built around that rather than a construction kit.
Which one should you get?
- Building and launching rockets, quickly: Spaceflight Simulator.
- Building anything, in depth: Juno: New Origins.
- Strategy on real orbits, a few minutes at a time: Celestrike.
They do not really compete: all three are free to try, and people who like one of them often like the others.
Where Celestrike comes in
Celestrike's satellites follow real orbits with the Earth's bulge in the model, and propellant is finite, so where a satellite can go is a decision you pay for. If that sounds like the part of Kerbal Space Program you liked, it is worth a look. Celestrike is a free spy-satellite strategy game for iPhone and Android, played on real orbits — on the App Store and Google Play.