Collection
Audio & Time
Keep time and stay in tune — metronome, tuner, timers and alarms. 15 tools, free, no sign-up, nothing uploaded.
Metronome
A steady, accurate metronome from 20–400 BPM with time signatures, subdivisions, and tap tempo.
Virtual Instruments
Play a piano with eight synth voices and a drum pad — with your mouse, touch, or computer keyboard, all in your browser.
Timer & Stopwatch
A countdown timer with alarm, plus a stopwatch, alarm clock, and pomodoro timer — all in one.
Instrument Tuner
A chromatic tuner that listens through your mic and shows the note and cents sharp or flat.
Noise Generator
White, pink, and brown noise plus rain, ocean, and fan sounds for focus and sleep, with a sleep timer.
Focus Music
Endless generative ambient music for focus, meditation, and relaxation — five moods with several variations each, a layer mixer, and a session timer, synthesized live in your browser.
Tone Generator
Play a pure tone at any frequency (20 Hz–20 kHz) in four waveforms, plus a hearing-range test.
Sound Text Transfer
Send a short text message between two devices using only sound — encode to tones, decode by mic.
Mic Test
Test your microphone in your browser — a live waveform and level meter, an input picker, and record a clip to hear yourself. Nothing uploaded.
Voice Recorder
Record voice or mic audio in your browser with pause/resume and a live waveform, then download as WebM, WAV, or MP3. Nothing uploaded.
Audio Cutter
Trim MP3 and audio files on a waveform, add fade in/out, and export MP3 or WAV — a ringtone maker and clip cutter that runs in your browser. Nothing uploaded.
Audio Compressor
Shrink MP3, WAV, and other audio files in your browser — pick a bitrate, sample rate, or mono, see the savings, and download. Nothing uploaded.
Audio Speed Changer
Speed up or slow down audio and shift the pitch independently, in real time — make nightcore or slowed edits, slow songs for practice, then download. Nothing uploaded.
Vocal Remover
Remove or isolate vocals from a song in your browser with stereo phase cancellation, keep the bass, and download the instrumental as MP3 or WAV. Nothing uploaded.
Voice Changer
Change your voice live in your browser — robot, deep, chipmunk, alien, telephone, and echo effects heard in real time, with record and download. Nothing uploaded.