All 30 tools
Every tool runs instantly in your browser — nothing to install, nothing to sign up for. Pick a category below or jump straight to a tool.
Clean & Repair
4Speaker Cleaner
Shake dust and debris out of a muffled speaker.
Open tool →Clean & RepairWater Eject
Push trapped water out of your phone speaker.
Open tool →Clean & RepairBuzzing Speaker Test
Find the frequency where your speaker rattles.
Open tool →Clean & RepairSound Distortion Test
Hear whether your speaker clips or breaks up.
Open tool →Test
12Speaker Test
Check both speakers actually play.
Open tool →TestHeadphone Test
Full check of both headphone drivers.
Open tool →TestEarbud Test
Confirm both earbuds work equally.
Open tool →TestLeft Right Audio Test
Check your channels are not swapped.
Open tool →TestHeadphone Left Right Test
Verify left and right on headphones.
Open tool →TestStereo Test
Check stereo separation and centre image.
Open tool →TestBass Test
Find the lowest note your speaker can play.
Open tool →TestTreble Test
Check the high end of your speakers.
Open tool →TestAudio Volume Test
Set a safe, even listening level.
Open tool →TestEarphone Volume Test
Check your earphones are loud enough — and not too loud.
Open tool →TestHeadphone Sound Test
Full-range sound check for headphones.
Open tool →TestAudio Frequency Test
Play any exact frequency you need.
Open tool →Generate
7Tone Generator
A clean tone at any frequency and shape.
Open tool →GenerateFrequency Generator
Hold an exact frequency indefinitely.
Open tool →GenerateFrequency Sweep
Sweep smoothly across the whole range.
Open tool →GenerateWhite Noise Generator
Steady white noise for focus and sleep.
Open tool →GeneratePink Noise Generator
Softer, deeper noise for sleep and speaker checks.
Open tool →GenerateUltrasonic Sound Generator
High frequencies above normal hearing.
Open tool →GenerateLow Frequency Generator
Deep bass tones from 10 Hz upwards.
Open tool →Measure
7Hearing Frequency Test
Find the highest frequency you can hear.
Open tool →MeasureMicrophone Test
Check your mic is picking up sound.
Open tool →MeasureMicrophone Volume Test
See how loud your mic input really is.
Open tool →MeasureMicrophone Recorder
Record and play back your own voice.
Open tool →MeasureNoise Meter
Measure how loud the room is.
Open tool →MeasureSound Level Test
Check a sound level quickly.
Open tool →MeasureWaveform Visualizer
See any sound drawn in real time.
Open tool →