An execution constraint for iPhone
Done, finally.
Stop overthinking. Start finishing.
Dump everything into the funnel. The Matrix instantly categorizes the noise. Your One Task emerges, locks in, and the timer begins.
Dump everything on your mind. Don't overthink it. Just get it out of your head and into the app.
4 quadrants. Zero decision fatigue. One tap to your most important task for the day.
Your one thing. Your countdown. Full commitment. The timer keeps you strictly to the current task.
No escape. That's the point. The task stays visible across your entire Apple ecosystem.
Live countdown on every screen.
See your task without unlocking.
Impossible to ignore on your wrist.
"Most productivity apps make ADHD worse — infinite to-do lists, endless planning, zero execution. OneTask enforces completion."
Resources
Science-backed techniques, honest app comparisons, and real-world workflows for ADHD brains.
Brain dump methods, Eisenhower matrix, single-tasking, focus timers, and more.
Browse guides →Honest comparisons: OneTask vs Todoist, Things 3, Tiimo, TickTick, and more.
Compare apps →Real workflows for students, freelancers, parents, remote workers with ADHD.
See use cases →Priced to easily pay for itself in focus.