Daylio - Daylio enables you to keep a private diary without having to type a single line.

Future Me - Send an email to your future self

Penzu - Keep all of your thoughts in one place using Penzu. The app is similar to a journal that you might write in but with a few modern touches that allow you to do everything from sending messages to decorating the pages.

Modern Memories - Letters written today. Delivered in the future.

Journey - A diary that keeps your private memories forever.

Letter from You - Handwritten letter, mailed for you in the future.