Duosti: Habit Tracker for Two

One habit. Two people. One streak. Duosti is a habit tracker built for exactly two. Pick a habit, invite one person, and share a single streak. If either of you skips a day, it breaks. No leaderboards, no feeds, no followers. Just you, your person, and one number you're both protecting. Most habit apps are a solo checklist with social features added on. Duosti starts from the partnership. The reason you'll show up tomorrow isn't a badge. It's that someone is counting on you. HOW IT WORKS • Pick a habit: the gym, reading, a walk, a new language, meditation, drinking water, less scrolling, or anything you name yourself. • Invite one person: send your invite code by text or any messaging app. They join in a few taps. • Check in each day with one tap. When you're both done, the streak grows and you celebrate together. • Miss a day and the streak starts over. No shaming, no red marks. You…