The Arc Tracker - 92 Days, One Box Per Day

The arc tracker is a printable sheet for running a 92-day challenge: your rules down the left, every day of the arc across the top, and one tick box where they meet. Each rule gets a second line for its floor - the minimum version that counts on a bad day - and each sheet ends with a HELD column instead of a streak counter, so the score is a rate you can miss days against and still hit.

It comes in three shapes. A three-sheet version, one landscape page per month, for people who want room to write. A single-sheet version with all 92 days visible at once. And an undated version numbered day 1 to 92, for arcs that don't start on October 1. All of them are A4 (US Letter coming soon), all of them are free, and none of them are behind an email form.

If you want the reasoning behind the design first, that's in the arc challenge, explained.

Three versions, each A4 (US Letter coming soon), each carrying a QR code back to this page:

harder-arc-tracker-92day-dated (3 pages, landscape) - October, November, December 2026, dates and weekdays filled in, 7 rule rows. The default pick. Download the A4 PDF.

harder-arc-tracker-1sheet (1 page, portrait) - all 92 days on one sheet, 5 rule columns. For seeing the whole run at once. Download the A4 PDF.

harder-arc-tracker-92day-undated (3 pages, landscape) - days 1 to 92, no dates. For arcs starting any other day of the year. Download the A4 PDF.

Take the dated three-sheet version if you're running the 2026 winter arc. October 1 to January 1 is the standard window, the dates and weekday letters are already on the page, weekends are shaded, and the tick boxes are 16pt - big enough to actually mark with a pen, which is where most 90-day printables fall down. Seven rule rows gives you headroom above the three to five you should actually be running.

Take the single sheet if visibility matters more than writing room. Everything on one page means you see 92 days at once, and seeing the whole run does something that seeing today does not. The trade-off is smaller boxes and only five rules, with the rule names written once at the top and referred to by number in the grid.

Take the undated version if you're not starting in October. 'Winter' in winter arc refers to adversity, not weather, so a 92-day arc started in April is exactly as legitimate. The undated sheets run day 1 to 92 with no calendar attached.

A row per rule, and a floor line under it. The floor is the bad-day version: one page instead of ten, five minutes instead of an hour, shoes on and out the door instead of a full session. Write it in week one while you're clear-headed, because in week six you're negotiating rather than designing.

A box for every day. Three marks, and the legend is on every sheet: a tick for a day you did it, a slash for a floor day, an empty box for a miss. A floor day is the same box at the same size with the same weight as a full day - no half marks and no asterisks.

A HELD column, not a streak counter. At the end of each sheet you write how many days you held out of that block, and keep a running total against 92. That's deliberate, and it's the single biggest difference between this and a habit tracker.

Weekends shaded, on the dated version. Not decoration. It's how you find today without counting.

Day 92 marked as the finish line. The last box on the last sheet is outlined more heavily than the rest. It's the only box on the whole tracker that gets special treatment, because it's the only one that's the actual point.

1. Write your rules - three to five, one per row. Each one has to be scoreable yes or no in ten seconds. 'Did I train today' works at 11pm when you're tired. 'Did I eat well today' is a debate you will win.

2. Write the floor for every rule, before day one. This is the step people skip, and it's the step that carries you through weeks five to nine.

3. Set your rate target now. 80 of 92. 84 of 92. Pick a number you can miss days against and still hit, and write it down before you have a reason to move it.

4. Mark the day the day it happens. Reconstructed marks are a story about a week, not a record of one.

5. Total the HELD column at the end of each sheet. Not to celebrate - to keep the score honest and stop a bad fortnight from feeling like a failed quarter.

For the setup decisions that sit upstream of all this - the failure condition, the witness, the dead-zone plan - there's the arc setup checklist.

Because the streak is the thing that makes people quit.

Habit research indicates that a single missed day doesn't meaningfully derail the process. But a streak counter tells you the opposite: it says the missed Tuesday cost you everything, and the longer the streak, the more catastrophic breaking it feels. Headspace has reported that users who lose a streak of 31 to 60 days come back only about 9% of the time.

So the honest score is a rate. 84 days held out of 92 is a strong arc. So is 46 days, one missed Tuesday, then another 45 - and treating that Tuesday as a failure is precisely how people quit in November. The tracker is built so that a miss costs you one box and nothing else. Day 92 does not move. The longer version of this argument, including why the arc format gets this right and 75 Hard doesn't, is in the arc challenge, explained.

Paper doesn't ask you anything. It sits there whether you mark it or not, and by week six that's the problem - a sheet you're the only reader of is still self-reported.

That's the gap Harder is built for: challenges where the structure comes pre-built so there's nothing to design at 9pm, where a day isn't done until you post proof, and where missed days never move the finish line. It launches in October, the same week the 2026 winter arc starts, which was not an accident.

Print the tracker now. Subscribe if you want the version that checks.

Is the arc tracker free? Yes, all the files, with no email required and no watermark. The only ask on the page is optional.

How many days is the winter arc tracker? 92 days. October 1 to December 31 is 31 + 30 + 31 = 92, despite the challenge being universally described as 90 days. The 2026 arc runs Thursday, October 1 to January 1, 2027.

How many habits or rules can I track? Seven rows on the three-sheet version, five on the single sheet. Both are more than you should use - three to five binary rules is the range that survives 92 days. Ten-rule lists look serious on day one and collapse by week two.

What happens if I miss a day? You mark the box empty and carry on. There's no reset, no restart, and no penalty beyond the one box, which is the defining rule of the arc format and is supported by the evidence on habit formation. If your instinct is that a miss should cost more than that, what you want is the restart rule, and that lives in 75 Hard rather than here.

Can I use it for something other than the winter arc? Yes. The undated version is numbered day 1 to 92 with no dates, so it works for a summer arc, a 90-day training block, a study sprint, or any fixed-length challenge. The structure is the part doing the work; the calendar is a scheduling convenience.

Will it print properly? Every sheet with tick boxes on it is light, on purpose, because a dark printable is a page of toner and nobody prints it twice. Print at 100% scale rather than 'fit to page' so the boxes stay at 16pt.

Is there a digital version? Not yet. Harder launches in October and does this in an app, with photo proof instead of a tick box.