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About this app

SZZLE is a study lock app that requires you to solve problems to continue using your smartphone.

📱 How does it work?

When you unlock your phone, a set problem (math or English vocabulary) appears, and

you must answer correctly to return to the original screen.

If you try to switch to another app without solving the problem, you will be returned to the lock screen.

✏️ Question Types

- Addition / Subtraction (Two-digit numbers)

- Multiplication (Two-digit × One-digit)

- English Vocabulary (Vocabulary provided by Beginner / Intermediate / Advanced difficulty levels)

⚙️ Flexible Settings

- Choose question types and the number of questions as desired

- Run frequency settings: Every time unlocked / Every set time / Never run

- Check hints for difficult questions using the 'Show Answer' feature

🚨 Safety Features

- Directly connects to 112/119 and registered emergency contacts at any time in emergencies

- Unlock instantly with a password

🔒 No Concerns About Personal Information

- Use all features without logging in

- Settings, emergency contacts, and passwords are stored only on the device and are not transmitted to the server

📢 Accessibility Service Usage Guide 📢

Studyzle uses the Android Accessibility Service (AccessibilityService API).

Accessibility permissions are used only when the user has explicitly consented.

This app checks the moment the device is unlocked and the currently running app to provide a feature that guides the user back to the learning screen if they leave the learning screen before completing the learning quiz.

This is essential to enable the app's core function, "Learning upon Unlock."

We do not read or collect personal information, such as content displayed on the screen, text entered by the user, or passwords, through the AccessibilityService. Furthermore, verified information is not stored or transmitted externally.

What’s new

프리미엄 구독(인앱결제) 기능 추가