Free Sound Toolkit — Find My Phone, Bass Test & Stereo Balance
Three more free, private sound tools that run right in your browser — no app, nothing uploaded. Use them to locate a lost phone, test your bass response, and check left/right speaker balance.
📢 Find My Phone
Misplaced your phone nearby? Open this page on it (or leave it open) and tap to play a loud, pulsing locator siren until you find it.
Turn the volume up first. Tap again to stop.
🔈 Bass & subwoofer test
Sweeps from 20 Hz to 200 Hz so you can hear your low-end range and spot rattles or buzzing from loose parts or trapped debris.
Listen for buzzing or rattling — that points to debris or a loose component.
🎧 Stereo balance test
Pans a tone smoothly left to right, then lets you play each side alone, so you can confirm both speakers are balanced and working.
A silent or quiet side means a blocked, unbalanced or faulty speaker.