1 Hour Timer (60 min focus / 10 min break)
A 1 hour timer with no signup. The timer above is loaded at 60 minutes of focus with a 10 minute break, so pressing start begins the hour.
And in this app, an hour means one more thing.
An hour fills one jar, exactly
FocusBlock turns each focused minute into one block and stacks it on screen. Finish a set and the stack is poured into a jar, where it stays.
The smallest jar is the 1-hour jar, at 60 blocks. So completing one 60 minute run fills a whole jar — nothing left over, nothing short.
That neatness only exists when you use the app as an hour timer. Completing the jar unlocks a new block colour (Moss), so the hour you just spent stays as one visible object.
| Jar | Blocks needed | Focus time | Colour unlocked |
|---|---|---|---|
| 1-hour jar | 60 blocks | 1 hour | Moss (green) |
| 5-hour jar | 300 blocks | 5 hours | Tide (blue) |
| 10-hour jar | 600 blocks | 10 hours | Ember (orange) |
| 50-hour jar | 3000 blocks | 50 hours | Aurora (iridescent) |
One run, or 25 × 2?
An hour can be taken as one continuous run or two 25 minute sets. Same sixty minutes, different jobs.
A single run suits work where stopping means reloading — writing at length, following the shape of a codebase, working a proof through. Splitting suits anything where recall frequency matters, like memorisation, or a time of day when your attention keeps breaking.
If you cannot decide, run it straight through once and check whether you spent the back half watching the clock. If you did, it is too long, and the next one becomes 25 × 2.
What to know before leaving it running
Sixty minutes is long enough that whether notifications reach you starts to matter. You can watch a screen for 25; over an hour you will end up in another tab.
Desktop browsers (Chrome, Edge, Firefox, Safari) and Android Chrome fire system notifications with the tab in the background. On iPhone and iPad, notifications work only when the site has been added to the home screen as a PWA.
On every platform, a fully closed browser cannot notify you. That is a web limitation and worth stating plainly: if you plan to be away from the screen for the whole hour, set a phone alarm as well.
- Timing continues in a background tab (pausing the drawing does not drift the clock)
- Survives a reload — remaining time and the stacked blocks are restored
- iPhone / iPad notifications require Add to Home Screen
- While the browser is fully closed, no notifications
Stretching toward 90
When an hour is not enough, focus goes up to 90 minutes, a minute at a time. Jumping straight to 90 without practice usually turns the back half into going through the motions.
Complete a few 60s first, then move up through 70 and 80. Lengthen the break in proportion as you go (around 20 minutes for a 90).
1 hour timer questions
Does 60 minutes really complete a jar?
Yes. One block per focused minute, and the 1-hour jar takes 60 blocks. Complete a single 60 minute run and it fills exactly, unlocking a new colour (Moss).
Can I set longer than an hour?
Yes — focus goes from 1 to 90 minutes, a minute at a time. Until you are used to it, stepping up from 60 through 70 and 80 makes finishing much more likely. Lengthen the break to match.
What happens if I close the tab partway?
Backgrounding the tab is fine: timing continues and notifications still fire. Closing it stops the count, but reopening restores your remaining time and the blocks already stacked.
Does the break have to be 10 minutes?
No, breaks run from 1 to 30 minutes. Roughly a fifth of the focus length is a good guide, so about 10 for an hour. If the break is creeping past half the focus, shorten the focus instead.