Inbox Creature - A super cute virtual pet, delivered right to your inbox.
Digit - SMS bot that monitors your bank account & saves you money
Mailtrack.io - The best email tracking solution I've found. Free
Quicken - Stay in control of your monthly cash flows, budgets, and expenditures. Quicken provides a navigable interface where you can organize your debit, credit, and savings, and build good habits accordingly.
Tamagotchi Pix - The latest Tamagotchi now with a camera
Penny - Penny is a personal finance app that takes the pain out of keeping track of your finances.