Plethora of finance apps (Capital One, Discover, Local Banking Apps)
Shopping Apps
-Paypal
-eBay
-Amazon
-Geek
-Lux
I also have downloaded almost all of the Adobe Cloud creation apps...I have a folder named "adobe."
I like an App called "Debit and Credit" AWESOME app that helps you balance your checkbook and you can even upload it to iCloud so you can have it on all of your devices.
I use an App called "Automatic" which helps me evaluate my driving on any given day, and it helps me out with any check engine codes that may pop up. It does require the purchase of hardware to plug into your vehicle, but you can get it at Best Buy for like $100
I also use a Temperature Monitoring System by iDevices to cook that perfect steak, or have the PERFECT temperature for smoking a good brisket...of course it's wireless and I can check all this from the comfort of my couch. It's super handy for the sub-zero outside temperatures; you don't have to go out in the cold and check your food!!!
Of course there are the Social Media apps...a new App I found is called "Peach" and I use it with family members...especially if I want to say something off Facebook/Twitter.
Tapatalk is a MUST HAVE, It's hard trying to remember all my usernames and passwords to every forum I visit, but Tapatalk offers a one-stop solution.
...with that being said, I also think 1password is also a "must have" for anyone who does ANYTHING online. It securely stores a lot of private information...and it can generate passwords as well.
I also use "FileBrowser, Documents 5, & iCloud Drive" to manage my data in the cloud and across devices...
PDF Pro 5 is a good one, and it was just free a couple weeks ago...
AppShopper is a good App to find free and reduced Apps.
Sign it - allows you to sign PDF documents
Scanner Pro - Scan documents to a PDF using your camera
...and the list can go on and on and on