The mower is working quiet well. My lawn is not only Green gras also some hard gras because it's à dry région. So thé plastic support makes noice when it's passing over thé hard gras. And thé sissors dont stay fixe, i need to fix them all days. In february i'll look more for this and i'll sender you my feedback. Thé app, i think à possibilité to drive (fr9nt, left, right, back) thé mower could be welcome.