Audio — Online tools

Use these free web tools directly in your browser, with no signup.

Use these online audio and music tools to work on tempo, generate sounds, test frequencies, check a stereo signal, or create short sound effects. The metronome, tap tempo, tuning fork, sound generators, and audio tests run directly in your browser, with no sign-up, no ads, and a lightweight, fast interface designed to work well on mobile.

Advanced metronome

Practise tempo with rhythms and count-in

Advanced note frequency

Compare frequencies by temperament

Audible frequency test

Quickly test different sound frequencies

Audio phase test

Test an in-phase or out-of-phase signal

Automatic sound effect generator

Create several random sound effects and export them as WAV files.

Frequency generator

Generate a pure tone at the frequency of your choice

Frequency of a note

Calculate the frequency of a musical note

Frequency sweep

Generate a progressive sound between two frequencies

Metronome

Set tempo and play in time

Musical duration calculator

Convert a tempo into note durations

Noise generator

Generate white, pink, or brown noise

Sound effect editor

Create short sound effects and export them as WAV

Stereo test

Test the left, center, and right channels

Tap tempo

Estimate BPM by tapping the pulse

Tuning fork

Play an A4 reference tone

About these tools

AppErgo’s Audio & Music tools are designed for musicians, sound creators, curious users, and anyone who needs quick audio checks. You can keep a steady rhythm with a metronome, find a tempo with tap tempo, listen to a reference note, generate a precise frequency, test your hearing, check stereo channels, or create a simple WAV-exportable sound effect.

Each tool is designed to stay lightweight, fast to load, and pleasant to use on both desktop and mobile thanks to a responsive interface. The tools run directly in your browser, with no installation, no account required, and no ads.