Show HN: I built a daily mission app to become 1% harder every day

Hey HN.

I wanted an app that would push me to get uncomfortable every day—cold showers, early wake-ups, running, and deep focus. But nothing felt right… so I built it myself.

StayHard is a web app that gives you one mission per day per habit track (running, cold exposure, focus, etc.), and makes each one about 1% harder than the last. Think Duolingo meets David Goggins.

- Choose your tracks: Run, Cold Shower, Wake-Up, Focus, Study, Strength - One-tap mission tracking with XP and streaks - Weekly leaderboard, public profiles, motivational layer - AI coach chat for those tough days - Built in 12 days using Next.js, MongoDB, and Stripe

Would love your feedback.

Bart