Chronos

Free Daily Planner

Plan your day on a timeline and see it next to what you really did: type tasks in plain words, let Chronos fit them into your free time, keep weekly routines, track time with one tap and work in focus rounds, with nothing uploaded.

Free time

Today

    Plan Done

    Waiting to be placed

      Drag a task onto the plan, or press Place to put it in the next free time.

      Keys while you use the tool: N add, T today, J and K the day or week before and after, 1 to 5 switch views, ? help.

      How to Use Chronos: Step-by-Step

      1

      Type what is on your mind

      On Today type a line such as "Write report 90m #work !!" or "Standup 9:30 15m" and press Add. A line with a time goes onto the day as a block; one without a time waits under Waiting to be placed. The words under the box show what will be made.

      2

      Plan the day

      Press Plan my day: Chronos fits the waiting tasks into your free time, most pressing first and long ones in your best hours, and shows the result before it places anything. You can also drag a task onto the timeline or press Place on it.

      3

      Shape the timeline

      Drag on the Plan lane to draw a block, drag a block to move it and its bottom edge to change its length; on a phone, press and hold first. With the keyboard, arrows move the chosen block and Shift with the arrows changes its length.

      4

      Track what you really do

      The bar under the tabs shows what is on now: press Track it to time it, Done when it is finished, or Start a timer for anything else. Tracked time fills the Done lane beside your plan.

      5

      Work in focus rounds

      On Focus pick a rhythm and what you are working on, then press Start. Breaks follow by themselves if you like, and anything that comes up can be noted without leaving the round.

      6

      Close the day and look back

      Press End the day: move unfinished tasks to tomorrow, back to waiting or off the list, and note how the day felt. Insights then shows planned against done, where the time went and how long tasks take against your guesses.

      Why Use Chronos?

      🧭 Plan and reality side by side

      Most planners show only the plan. Chronos draws each day twice, what you meant to do on the left and what you really did on the right, so the gap between the two is something you can see and learn from.

      ⌨️ As fast as typing a note

      No forms to fill in for every task: one line in plain words carries the time, length, day, category, priority, due date or repeat, and you see how it was read before you press Add.

      🧩 Your free time, filled for you

      Plan my day places waiting tasks around your meetings and routines, keeps a gap between blocks and puts long tasks into the hours you choose, then lets you check the result before anything changes.

      🔁 Routines without retyping

      A run every Monday, Wednesday and Friday or a weekly review is typed once and comes back each week. Skip or move one day without touching the rest, or pause the routine for a holiday.

      📈 Insights from your own days

      How much of the plan you keep, which categories take your hours, when in the week you get things done and how long tasks take compared with your guesses, all worked out from what you tracked.

      🔒 Nothing uploaded

      There is no account and no server copy. Everything stays in this browser on your device; a backup file moves it to another browser, and calendar files are read and written on the device.

      Time Blocking, Time Tracking and Focus Rounds Explained

      🗂️ Time blocking

      Time blocking means giving each task its own stretch of the calendar instead of keeping only a list. Seeing the whole day at once shows early whether everything fits, and each task gets a set time to start.

      ⏳ Tracking against the plan

      Many people underestimate how long tasks take. Tracking the time a task really took and comparing it with the length you planned shows your own pattern, and the Your estimates chart in Insights turns it into one number you can plan with.

      ☕ Work in rounds

      A common way to work is a fixed stretch of focus followed by a short break, with a longer break after a few rounds, such as 25 minutes and 5. Chronos lets you pick the lengths, notes what comes up during a round and counts the rounds as done time.

      Frequently Asked Questions

      Is Chronos free, and is anything uploaded?

      It is free, with no registration. Like every page on ZeroDataUpload, it is supported by advertising. Your tasks, blocks, routines, tracked time and reviews stay on your device: they are kept in this browser between visits and never sent to a server. Delete everything, under Settings, removes them.

      What does typing in plain words do?

      Chronos reads the line you type for a time (10am, 9:30, from 2 to 3pm), a length (45m, 1h30, half an hour), a day (tomorrow, friday, 25 oct), a category (#work), a priority (! to !!!), a due date (by friday) and a repeat (every mon wed fri). A line with a time goes straight onto the day as a block, a line without one waits as a task, and a line with a repeat becomes a weekly routine. The words under the box show what will be made before you press Add.

      How does Plan my day decide where tasks go?

      It takes the tasks waiting for a time, most pressing first: past their due date, due that day, planned for that day, then by priority and due date. Tasks of an hour or more, or marked as needing deep focus, go into the hours you chose as your best ones (morning, afternoon, evening, or worked out from your own focus rounds); the rest go into the earliest free time. A gap you choose is kept on both sides of each block, and a long task is split into parts of at least half an hour only when it does not fit in one piece. You see the result and the tasks that do not fit before anything is placed.

      What is the difference between Plan and Done?

      Plan is what you meant to do; Done is what really happened, from the timer, from focus rounds, from blocks you tick and from time you add by hand. A planned block counts as done when you tick it, finish its task, or track at least half of its time. Insights compares the two day by day, so you can see how much of your plan you keep and how long tasks take compared with your guesses.

      How do focus rounds work?

      You pick a rhythm (25 minutes of focus and a 5-minute break, 50 and 10, 90 and 20, 52 and 17, or your own lengths) and press Start. After a set number of rounds comes a longer break. A soft bell and, if you allow them, a notification mark each change while the page is open. If the computer sleeps through the end of a round, the next one waits for you instead of counting time nobody worked. These rhythms are common ways to work; pick the one that suits you.

      Can I use my Google or Outlook calendar with it?

      Yes, through calendar files. Export your calendar as an .ics file and pick it under Calendar file on Week: meetings from a week ago to two months ahead come in as blocks, daily and weekly repeats included, so Plan my day works around them. The other way, Save the file writes your plan and routines as a calendar file that Google Calendar, Outlook and Apple Calendar can open. Nothing is linked to an account; the file is read and written on your device.

      How is Chronos different from the Clock, NoiseHaven and Unplug?

      The Clock has alarms, a countdown timer, a stopwatch and a world clock, but no plan. NoiseHaven plays sounds and has focus rounds of its own to go with them; Chronos's focus rounds count as done time on your day and in Insights. Unplug is about phone screen time and makes a calendar file of a detox plan. Chronos is the planner: a timeline for each day and week, tasks that wait to be placed, routines, a timer, a day review and the insights that compare your plan with what you did.