It’s a free service that allows you to call an 800 number, and use your voice to send an e-mail or a text message. You can jott yourself (like when you have an idea in the car), another person, or a whole group of people (like a your playgroup or something).
You can jott events directly to your calendar.
You can say Amazon and jott will send a link to a certain book. All kinds of other things. It’s an incredible productivity tool.