Orbital Frontier
Download it.
It is early, it is free, and it changes most days. Your space program lives on the shared world, so it follows you from one of these to the next — build a rocket on the desk, fly it on the bus.
iPhone & iPad
iPhone and iPad builds go out through TestFlight while the App Store listing is being set up, and the invite is not public yet. The manual says how it works once you have one.
Android
On a computer
macOS
“Pass Me the Box, Morty: Ready-Made Rockets”
Download orbital-frontier-0.280.13-59.dmg
Needs macOS 11 Big Sur or newer.
Signed and notarized by Apple. Open the disk image, drag Orbital Frontier into Applications, and double-click it.
Earlier builds: 0.278.15 (58), 0.276.2 (57), 0.275.13 (56), 0.275.12 (55)
SHA-256 58e228fd8cd9d5d6a2ccb48c09363c24c3a71ee2b5bcb9f782a858c7f7e06ba9
One space program, every platform: the manual says what signing in carries between them.