absolutely useless. I'm not joking. I've been trying to use the brush pen function and it doesn't even save or let me use the eraser. The ERASER. for a DRAWING tool. It's also ridiculously buggy and the only functions that aren't paid for could literally be found in apps that not only have more tools and precision, but also better premium options. Delete this horrible app so it doesn't take up any of ur valuable space.