The habit system that travels with you. The Habit Tracker Pro gives you a clean, structured layout to track up to 8 habits per week – undated for flexibility, with guided prompts, a notes section, and micro-perforated pages on tree-free stone paper. The Stone Pen is Swiss-made from the same calcium carbonate as our paper, with Floating Ball® ink that dries on stone paper in under three seconds. Your entire consistency system, pocket-sized.