Mossy
Mossy is a small plant that lives on your Mac desktop. The longer you sit without a break, the more it wilts. You write one sentence about what your breaks should be. Stretch my bad back. 20 push-ups. Teach me a Spanish word. Just make me stand up. An AI writes every break from that sentence, one task at a time, with a timer. It never blocks or dims your screen. Ignoring it is a normal way to use it. Free, no account, 1.4 MB, native, macOS 12+.