Echo
Say a reminder out loud, in Greek or English. Echo works out what you meant and when, shows you what it heard, and reminds you later — in your own voice.
Your reminders and recordings stay on your phone. To understand a new reminder the recording goes to Google once to be turned into text, then is discarded — that single round trip is the only time audio leaves your device.
Echo is in closed testing on Android and is not yet publicly available.