Ocatune is a dynamic practice drone. It listens to the note you are currently playing on the ocarina, and plays the closest equal tempered note for you as a reference pitch. This allows you to easily hear tuning errors.
Ocavis graphs the pitch of your notes over time, allowing you to easily see if your blowing pressure is stable, and if there are notes you frequently play out of tune.
A drone can provide a reliable pitch reference to help you play the ocarina in tune. The different ways of using one are explained in the article Playing the ocarina in tune.
A standard chromatic tuner, implemented as a web app for your convenience. A tuner visualises the pitch of notes that you are playing.