Study Timer (25 min focus / 5 min break × 4 sets)
A study timer with no signup. The timer above is loaded at 25 minutes of focus, 5 minute breaks, 4 sets, so opening a textbook and pressing start is all of it.
That 25-and-5 is the standard Pomodoro split, and it is the length that suits studying most directly.
Vary the length by subject
25 minutes is a good default, but the right length differs by what the work asks of you. Run memorisation and reading comprehension at the same length and one of them will always be fighting you.
The rule of thumb: short and often for memorisation, long and settled for anything that needs thought. Recall frequency is what fixes vocabulary in place, so 15–25 minutes, many times wins. Maths and close reading need a run-up, so give them longer.
| Subject / material | Focus length | What it is for |
|---|---|---|
| Vocabulary, terminology | 15–25 min | Repetition fixes it. Do not aim to finish in one pass |
| Maths and science problems | 25–45 min | Protects the run-up before you can solve |
| Reading comprehension | 25–45 min | You need to follow a text end to end |
| Past papers, mock exams | 50 min | Match the real exam and sit it in one go |
| When you are sleepy | 15 min | Finishing beats defending the length |
Study time recorded without you keeping the log
The part that actually helps is that what you did does not evaporate. Type the subject before you start and the minutes accumulate against it.
You get "2 hours of English, 40 minutes of maths", so the imbalance is visible. Hand-kept study logs die in three days; this one accrues just from using the timer.
Each focused minute also becomes a block on screen, and finishing a set pours them into a jar. There are four jars — 1, 5, 10 and 50 hours — and completing one unlocks a new block colour.
- Enter the subject, press start → per-subject study time, totalled automatically (week / all time)
- Focus 1–90 min / break 1–30 min / sets 1–8, to the minute
- Zero ads during focus. Studying is not interrupted
- Records stay on your device. No account, nothing uploaded
Picking up your phone during the five minutes is how this fails
Harder than the 25 is the 5. Touch your phone here and five minutes becomes thirty. The break exists to recover, so getting away from a screen is what makes the next 25 cheaper.
Three options, and only three: stand up, drink water, look at something far away. Sitting still looking at a phone rests neither your eyes nor your head, so it is not really a break.
The escape route for days when 25 will not happen
On a bad day, defending 25 minutes turns into not starting at all — the worst available outcome. Drop straight to 15, or to 5.
Anything from one minute up is a legitimate setting, so running five is a correct use of this. Five minutes still leaves five blocks. Refusing to think in all-or-nothing is what makes the record grow.
Study timer questions
Is 25 minutes too short for studying?
For memorisation 15–25 minutes is about right; for reading or maths, 25–45. 25 is an easy default to start from, so stretch it per subject once you have the habit. Focus is adjustable from 1 to 90 minutes.
Can it log time per subject?
Yes. Enter the subject before you start and the minutes are logged against it, viewable for this week and for all time. You do not have to keep the log yourself.
Does it work on a phone?
Yes — open it in a browser, no signup or install. Note that records are stored per device, so your phone and your computer keep separate totals.
Is it free?
Entirely. There is no paid tier and no locked features. Skins unlock by completing jars; nothing unlocks through payment or watching ads.