Install the app on your device: a home-screen icon, full screen, and an offline fallback. Nothing to download from a store — everything starts here.
Installed ✔ — find Smelter on your home screen.
Tap the button above if it's shown, or the menu ⋮ then Install app.
Tap Share (the square with the arrow), then Add to Home Screen.
Click the install icon in the address bar (on the right), or the button above if it's shown.