Fly Infinity

Productivity · Offline

One Thing

One task a day, one focus timer, one streak. No account, no ads, works offline.

A to-do list lets you collect work, and collecting feels like progress until the list is long enough to be its own decision. One Thing removes the list: you choose a single task for today, give it a timer if you want one, and when it is done the day is done. There is nowhere to put a second task, so there is nothing to decide except starting.

No account needed · works offline · no ads

One Thing: Daily Focus Timer feature graphic

Key features

What you actually get

Everything below is in the app today. Nothing here is a roadmap item.

  • One task, and nowhere to put a second

    You write down the one thing. The app does not offer you a list to grow, and when the task is finished it does not hand you an empty box and ask for another.

  • A timer that survives the phone

    Pick a length or set your own. The countdown is tracked against the real clock, so it stays right whether you switch apps, take a call or restart the phone. You are alerted before time runs out and again when it does, with the app closed and the screen off.

  • Running over does not undo it

    The timer keeps counting past the end and the task still counts as finished. Finishing late is finishing.

  • The smallest first move

    Choosing is one problem and starting is another, so alongside the task you can note the one action that needs no plan — and that is what the app keeps in front of you.

  • A streak you can see

    Every finished day fills a dot on a five-week calendar, gaps included, because the gaps are what make a run worth protecting. Today counts as in progress, so a streak is never at risk while the day is still going.

  • Your numbers, and a file you can keep

    Tasks finished, days completed, total time focused, your average session and the weekday you finish most. Every completed task stays in a history you can scroll, delete from, or export as a CSV.

  • Works with no signal, because it cannot use one

    The app asks Android for no internet permission at all, so everything happens on the phone. That is enforced by the operating system rather than promised by us.

What it looks like

Screens from the app

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Who it's for

Is this for you?

  • You open the task manager and close it again

    Fourteen items, no obvious first one, and the app is shut before anything is started. This one holds a single task on purpose.

  • The planning became the work

    If nested projects, tags and priorities turned into the thing you were actually doing, there is nothing here to organise.

  • You want the streak, not the points

    No badges, no levels, no leaderboard. One dot per day you finished, and one nudge in the evening if you have not.

Price

What it costs

Free. No subscription, no trial and no locked features — including the statistics and the CSV export that other apps charge for.

Small print

Before you install

Everything this app is committed to, in the documents that commit it.

Privacy policy

Read exactly what stays on your phone, and precisely what the one outside company involved in this app can see.

Read the policy
One ThingProductivity · OfflineOne Thing: Daily Focus TimerGet it onGoogle Play