Day 100: Fitness Challenge

One challenge. 100 days. That's it. Pick something simple — push-ups, a plank, a daily walk — or choose from over 40 bodyweight moves, and commit to it for 100 days. Day 100 gives you a 10×10 grid that fills as you go. Every check-in is a square. Every square is proof. TRACK WHAT MATTERS • The signature 100-day grid — your whole journey on one screen • Daily check-ins with streaks that actually mean something • Tap any past day to see what you did REMINDERS THAT LEARN Day 100 notices when you usually train and nudges you at the right moment — not at some arbitrary hour. Already checked in? No nag. Done is done. SHARE THE JOURNEY Every challenge gets a short day1.at link. Share Day 1. Share Day 50. Share the finish — or follow a friend's challenge and watch their grid fill up too. DAY 100 PRO • Run up to 3 challenges at once • Grace days — repair a missed day and keep your streak alive • AI training plans — a personal coach builds your next 100 days around your goals and fitness level • 40+ additional exercises across core, glutes, legs and cardio Pro is available monthly or yearly. The grid, daily check-ins, 6 free exercises, and one active challenge are free forever. Day 1 starts now. — Day 100 Pro is a monthly or yearly auto-renewing subscription. Payment is charged to your Apple ID at confirmation of purchase and renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://day100.co/terms Privacy Policy: https://day100.co/privacy