Habitcue rejects the gamification arms race. No streak-punishment, no push-notification tyranny. Instead, each habit is a cue you attach to a moment of your day; the app lives in your widgets and Apple Watch and shows up only when asked.
Tiny app, disproportionate care in the details — haptic choreography for check-ins, live activities for current cues, and a data model that gracefully handles the fact that humans miss days.