Physical Keyboard Test & Fix

Super Ratel

In-app purchases

About this app

Is your physical keyboard typing the wrong letters on Android? Test it first, identify the active layout, and follow clear steps to fix it.

Physical Keyboard Test & Fix is an offline-first diagnostic utility for USB, Bluetooth, and other external keyboards.

KEY FEATURES

• Detect connected physical keyboards
• Run a guided QWERTY, QWERTZ, and AZERTY layout test
• Identify common Y/Z, A/Q, and W/Z mismatches
• Open Android's Physical keyboard settings
• Verify the layout after you change it
• Test a standard 104-key keyboard
• Inspect KeyCode, scan code, Unicode output, and modifier state
• Handle USB disconnects and reconnects safely
• Copy a redacted diagnostic summary when you request it

PRIVACY FIRST

The keyboard-testing core works offline. The app does not require an account, contains no advertising, and does not upload the text you type. Keyboard events are processed locally on your device.

ANDROID LIMITATIONS

Some system shortcuts, Windows/Meta keys, and Fn keys may be reserved by Android, the device manufacturer, or the keyboard firmware. The app explains these cases so they are not mistaken for broken keys.

Device manufacturers customize Android settings, so the exact layout-setting screen may vary. The app provides the closest available shortcut and step-by-step guidance.

What’s new

Added privacy-safe TXT and JSON diagnostic report sharing and saving. Kept the complete 104-key tester free during testing. Improved purchase validation and removed unverified keyboard layout providers from release builds.