PocketGuard - PocketGuard categorizes and organizes your expenses, monthly bills and subscriptions into clear, beautiful tabs and graphs, so you will always be on top of your finances.
PhotoStudy - Stuck on a Math or Science Problem? Get Help From an Expert Tutor in Seconds!
Penny - Penny is a personal finance app that takes the pain out of keeping track of your finances.
Math.com - Math.
Goodbudget - A home budget app based on the envelope budget system. Available on the web, Android, and iPhone.
Mathway - Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.