I've tried using apps for this, and I've found that the thing that works best is a plain old wall-calendar. Hang that up somewhere visible, and make one box on

I've tried using apps for this, and I've found that the thing that works best is a plain old wall-calendar. Hang that up somewhere visible, and make one box on each day for each of the habits you're trying to build. Put a green tick in once you've done it, and try to keep it up every day. Apps are easy to ignore. A wall calendar is harder to forget about.