Import an OpenRocket .ork design and Loft simulates the flight in your browser — apogee, speed, stability, and recovery — and compares against the numbers OpenRocket stored in the file. It runs on a phone, offline once loaded. Results are estimates from a model; see how they're computed and where the model is weak.
Import an OpenRocket design
Drop a .ork file here, or choose one. Everything runs in your browser — your design is never uploaded.
Or try a bundled example
Use it offline & install it
Loft runs entirely in your browser. Once you've opened it on a device with a connection, it keeps working with no signal — so you can import a design and simulate it at the pad. Install it and it opens like any app, full-screen and offline.
- iPhone / iPad (Safari): Share → Add to Home Screen.
- Android (Chrome): use the Install button above, or menu (⋮) → Add to Home screen.
- Desktop (Chrome / Edge): the install icon in the address bar, or menu → Install Loft.
The motor database and the simulation run on the device, so a design imported offline still simulates. Open it online now and again to pick up any updates.