Habit Tracker Streak Day18

Day18 turns building better habits into something you actually want to open every day. Post a quick video every time you show up, watch your streak grow, and get real support from people building the same habit as you.

HOW IT WORKS Pick a habit — or start your own — and post a short video every time you check in. Browse Explore to join habits other people have already started, from morning runs to reading before bed. Every check-in adds to your streak and shows up in your friends' feeds.

WHY DAY 18 Research on habit formation shows new routines start to feel automatic somewhere between 18 and 254 days in. Day18 is built around that first milestone — the point where showing up stops feeling like a chore. Hit day 18, then keep going.

GET CHEERED ON No one builds a habit alone. React to check-ins, drop comments, and watch your habit's whole community show up for you. Join a habit and you're instantly part of a group that's rooting for your streak.

Day18 is completely free to use — no paywall on posting, joining, or cheering. Atta the axolotl is with you from your very first check-in, cheering every streak all the way to day 18 and beyond.