Coco is your personal note-taking and calendar assistant on WhatsApp.
Coco manages your google calendar, sets reminders, keeps track of lists, sends reminders to others, and more all in WhatsApp.
I personally text myself a lot and have been reading that so many other people also do for the sake of quick thoughts / brain-dumps / reminders. Texting is low effort, WhatsApp is universal, and no extra apps are required. Coco is for those people who text themselves all the time and want more gain out of it.