Plank

One plank. Every day. That's the whole app. Plank is a focused daily habit tracker built around a single move: the plank hold. Start the timer, hold as long as you can, and log it. Come back tomorrow. Watch the streak grow. A TIMER THAT GETS OUT OF THE WAY • Big, clear time display • Tap to start, tap when you're done • Live progress against your daily goal • A daily reminder so you don't forget STREAKS THAT KEEP YOU HONEST • Day streak front and center • Yesterday's best time at a glance • Goal-met state that makes today feel finished • A 21-day strip on the home screen to show momentum HISTORY THAT SHOWS THE WORK • GitHub-style heatmap — every day you held, colored in • Stat cards: total time, best hold, active days, average • Tap any day to see every session from that day • Recent list of your last few holds HOME SCREEN WIDGET Add the Plank widget to your home screen and see today's progress, your streak, and the week so far — without opening the app. PRIVATE BY DEFAULT • No account • No sign-in • No analytics, no third-party tracking • All data stays on your device Built for people who want one thing tracked well, not ten things tracked badly.