Spicer - Mobile app for couples to improve sex.
Sortd - Rated the #1 App for Gmail
Naughty Grin Sex Dice - Free Online SEX DICE, Foreplay Games for Naughty, Kinky Couples
KanbanMail - A Kanban board for your emails.
Couple quest - Simple "board-like" game for couples.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.