Study Timer by Subject
Time each subject with a stopwatch and build up cumulative study hours, with today's total, a weekly chart and CSV export. Saved on-device, never sent.
Time each subject with a stopwatch and rack up hours. See today’s total and a weekly breakdown. Records are saved on this device and never sent.
Add a subject and press Start to time your studying.
🔒 Subjects and study records are stored in this browser only and never sent anywhere.
Time by subject
Add subjects, then start/stop a stopwatch for each. Only one runs at a time, and time accrues to that subject for the day.
See your progress
Check today's total and a last-7-days bar chart to see how much you studied, and export a CSV.
Private
Subjects and records are stored in this browser only and never sent to a server.
Frequently asked questions
Does timing continue if I refresh?
Yes — a running timer keeps counting across refreshes since its start is saved locally.
Is my data uploaded?
No. Records stay in your browser.