Study Density Log

In addition to the actual study time, this learning record app visualizes "how deeply you studied" using "Concentration-Converted Time" weighted by your focus level. It's packed with daily task management, consecutive achievement streaks, and a calendar to keep you studying consistently.

🔑 Before You Start

• Login with a Google account is required to use this app.
• Your data is saved in the cloud and synced across multiple devices like smartphones and PCs (only you can access your data).

📱 For Smartphone Users: Adding to Your Home Screen is Recommended!

The app launches in full-screen mode and runs more smoothly.

• iPhone (Safari): Share button → "Add to Home Screen"
• Android (Chrome): Menu (⋮) → "Add to Home Screen"

🚀 How to Use

1. Log in with your Google account
2. From the "Add" tab, register your study records (you can also use the stopwatch to measure time)
3. From the "Goals" tab, set your weekly target hours, calendar, and daily tasks
4. On the "Home" screen, complete today's tasks and build your streak (consecutive days of achievement)!

✨ Main Features

• Concentration-Converted Time … Automatically calculates study time weighted by focus level (S to D)
• Subject, Material, and Label Classification with totals and graphs for today/this week/this month/all-time
• Weekly Goals & Achievement Rate / Calendar showing days you studied
• Daily Task Management (carry over incomplete tasks from the previous day to the next day)
• Study Streaks / Task Memos / Stopwatch / Countdown to Test Day

🔒 Privacy

Study records, material names, memos, and other data are safely stored as data belonging to the logged-in user. Other users cannot view your information.