勉強ばこ

Content rating
Everyone
1+
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Content rating
Everyone
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About this app

This app records study time for each subject.

You create "boxes" for each subject or learning material. Pressing a box starts the timer. Pressing it again stops the timer, and the counted time is recorded down to the second. That's all there is to it!

■ Counting with a single press
Pressing an empty area of ​​a box starts counting from zero. The timer continues even when the app is closed, and the time remains accurate when you return. A notification remains while counting is in progress, so you'll be reminded if you forget to stop.

■ Recording in seconds
The record is saved in seconds. It doesn't round up to minutes, so both short and long study sessions are recorded exactly as you spent them.

■ Setting daily goals
You can set a daily goal of "X minutes" for each box. You can see your progress immediately, and the goal resets daily. You can leave some boxes without goals if you prefer.

■ Counting by time (timer)
You can also set a time limit and count backwards. It will notify you when you're finished. It only works when you initiate it; it won't start automatically. If you don't use it, you can remove this entry point in the settings.

■ Record Later
You can manually enter any time you forgot to count later. You can also enter data for past dates.

■ View on Calendar
Days you studied are highlighted in darker colors, while days you didn't study remain white. Even a single second of recording will trigger a colored display. The number of consecutive days and the longest consecutive period are also displayed.

■ Total by Period
You can calculate totals for this week, this month, this year, the entire year, and a period of your choice. A breakdown by category is also displayed.

■ Stored Only on Your Device
Records are saved only on your device. No account is required. Backups are manually created and imported.

■ Quiet Operation
Graphs, detailed statistics, rankings, and competition mechanisms are not included. You can set the daily reset time yourself (e.g., 3 AM for night owls). The screen brightness adjusts to your device's brightness settings.

It can be used for recording study progress, self-study, test preparation, exam preparation, and time management for qualification studies.
Simply create a "box" for each subject and press it. It records your study time down to the second, and you can review it against a calendar and total. The records are stored only on your device.
Updated on
Aug 18, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
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What’s new

最初のリリースです。科目ごとに「箱」をつくって、勉強した時間を記録できます。
Content rating
Everyone
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App support

About the developer
TAKUTO IGUCHI
iguchi.apps@gmail.com
2-2-10, ISOBEDOORI, CHUO-KU ONE KNOT TRADES KOBE BLDG. 1006 KOBE, 兵庫県 651-0084 Japan
+81 90-5966-9432