🎧 Device Testing Tools
Check that your device hardware works correctly. Test speakers for stereo balance, microphone quality, battery health, screen refresh rate, subwoofer bass, and vibration motor — all free in your browser.
Speaker Cleaner
Remove water and dust from your phone speaker using calibrated sound frequencies. The same technology used by Apple Watch — now free for any device in your browser.
Speaker & Headphone Test
Test your speakers, headphones, or surround system right in the browser.
Sound Level Meter
Measure noise levels in decibels using your device microphone. Free, private — all processing happens in your browser.
Microphone Test
Check if your microphone works — test volume, sensitivity, noise floor, and audio quality in the browser.
Mic Noise Test
Test your microphone for noise, identify the problem type, and get step-by-step fix instructions.
Vibration Test
Test your device vibration motor with patterns, diagnostics, and a custom builder.
Subwoofer Test
Test your subwoofer with tone generator, frequency sweeps, bass drops, diagnostics, and room mode calculator.
Refresh Rate Test
Measure your monitor refresh rate with precision frame timing. Detect Hz, analyze jitter, explore display capabilities, and test motion smoothness — all in your browser.
Battery Checker
Free online battery checker.
Dead Pixel Test
Check your screen for dead, stuck, and hot pixels with 21 test patterns and built-in repair tool
Keyboard Test
Test every key, detect ghosting, measure latency and typing speed
