About this tool
Study Time Log is a free study tracker where you add the minutes you studied each day and see them as a calendar and a bar chart.
Tap +15, +30 or +60 after a session, or type an exact number, and the square for that day gets a deeper blue the longer you studied.
It works for exam prep, language practice, reading goals or any skill you practice, and you can think of it as a study hours counter, a daily study log or a study streak tracker.
It records time you tell it about and does not run a timer or watch what you do. How do you use it? Today is already selected. Tap +15, +30 or +60 to add time, tap −15 to take some away, or type the total in the box.
Tap an earlier day to fix a forgotten session and use the arrows to browse months. Under the calendar you see total hours this month, the average per study day, your current streak of logged days and your best streak.
Below that, a bar chart shows every day of the month, so you can spot your busiest days and the gaps. Tap a bar to select that day. Where is my data?
Your entries are saved in your browser's local storage on this device, under keys that start with sugi-study-time-log. There are no accounts and no server, so nothing you tap or type is uploaded.
The chart and the card are drawn in your browser from numbers stored on this device only.
Because the data lives in the browser, clearing site data or switching phones removes it, so use Export backup now and then and Import backup to restore it. Clear all data wipes everything for this tool in one tap.
The flame line at the top counts how many days in a row you opened this page, which is separate from your logged streak. Is there a daily note? Yes. A small study tip changes every day.
It combines 12 study moments with 12 gentle nudges, giving 144 different notes that cycle through before any repeats.
They are about habits, such as starting with just 15 minutes or comparing with last week instead of other people. Q: Does it measure how well I study? A: No. Minutes are only a rough record of effort, not of results.
Quality matters as much as quantity, so use the number as a friendly mirror and not a judge. Q: Is there a timer? A: No. Use your phone's timer or our other timer tools, then add the minutes here.
Q: How many minutes can I log in a day? A: Up to 1,440, and please remember to rest and sleep. Q: What does the card show? A: Your blue month, total hours, average per study day and streaks.
How to use
- After studying, tap +15, +30 or +60 to add minutes, or type the exact number.
- Check the calendar colors and the month bar chart; tap a bar or a day to edit it.
- Save the month card at the end of the month and return tomorrow to keep your streak.