If you just want to reduce repetitive tapping for farming:
The Westland Survival player base is divided on scripts. westland survival script
The once vibrant town now stands as a shadow of its former self, buildings half-destroyed, streets littered with debris. If you just want to reduce repetitive tapping
-- Craft basic shelter if wood >= 5 and stone >= 2 then craftItem("shelter") end = 5 and stone >
Tools like GameGuardian (GG) are the standard for Android scripting.