Free tools

Free voice & audio tools

Test your microphone, record and download audio, turn speech into text, or read text aloud. These free tools work in your browser without an account.

Processing depends on the tool and, for text-to-speech, the voice you choose. The Openbroca Mac app uses cloud services as described in its Privacy Policy.

Microphone test

Check that your mic works, watch the input-level meter, and select an input device.

Mic test — record & playback

Record a short clip and play it straight back, so you can hear exactly how your microphone sounds.

Online voice recorder

Record audio in your browser, pause and resume, then download the file. No install, no account.

Speech to text

Turn speech into text in 12 languages. The model runs in your browser after an initial download.

Text to speech

Read text aloud with the voices available in your browser. Adjust the speed and pitch.

Speaking speed (WPM) test

Estimate your speaking pace from microphone activity. The result is a rough guide, rather than an exact word count.

Speech time calculator

Paste a script to estimate how long it takes to say aloud — no microphone needed.

Background noise test

Check the background noise picked up by your microphone and compare different rooms or setups.

Speaker & headphone test

Play test tones and check your left and right channels — no microphone permission needed.

How these tools process your data

The microphone tests, recorder, and speech-to-text tool process audio on your device. Speech-to-text downloads a model before its first use. Text-to-speech uses the voices available in your browser, which may run locally or use an online service. Each tool explains how it works.

From browser demo to your whole Mac

Use Openbroca to dictate emails, messages, and notes in your Mac apps. It turns your speech into clear text, with a personal dictionary and translation when you need them. See what Openbroca does or compare it against Apple Dictation.

Write by voice across your Mac

Press ⌥ Space, speak, and keep writing in your Mac app. Openbroca turns your words into clear text. Start for free.

See pricing