Planet Studio?

With the newest beta you can actually use planet studio on mobile, by going to the controls settings and clicking the dropdown menu and pressing open dev console (incase you needed to know for mobile).

disclaimer: experimental pre-release feature, good luck.

Open the dev console by pressing the ~ (tilde) key, then type PlanetStudio and hit enter.

If the ~ key doesn't open the console check your control settings (it's the last one under "Other Controls").