Trying to not duplicate, here are the apps I use
1) Bible app. By Youvision – over 40 translation and dozens to download for offline viewing. All ways have Gods word with you. I Love this app. You can even highlight text, choose reading plans and send scripture by e-mail, text, etc.
2) Google Shopper – Good at looking up items and comparing prices
3) Battery widget – uses 1% incriments
4) Weatherbug Elit
5) Executive Assistant
6) Flightview – Keep track of flights, never worry about flight changes or delays again. (The widget is instantly updated when changes are made.)
7) QuickPic – Looks better then stock gallery app and much snapper
8) Apps organizer – Create folders for apps to place on home screen
9) Data widget – Pretty accurate in cell, wifi and tethering usage.
10) Quick App manager – Auto clear caches, etc.
11) ES File Explorer – manage files thru wifi and internet on laptop or other computer
12) Power manager – set different profiles with settings to conserve battery
13) Screen On – keeps the screen on for those apps that don’t have the option
14) Quick settings – allows turn on/off of GPS, Data, wifi, brightness, vo., etc. from the notification bar
15) Timeriffic – Set different profiles for like sleep, wake, etc. and set vols. For ringer, media, etc. turn off/on data, wifi, GPS. (Battery saver)
16) Flashlight – uses the duel LED
17) Kitchen Timer – can set up different presets for times. (I use this a lot for when kids are on the computer or playing games.) you can have up to 3 times going at once
18) Handcent – Great texting app
19) Car Dock – (This is not the stock app.) I have an iGrip car dock, so I needed a car dock app to open myself, since the stock when would not work with it
20) CoPiolet Pro Live USA – Great for offline navigation. (maps are stored on phone.)
21) Pandoria – Great listening of your choice
22) iheart radio – local channels anywhere you have a cell or wifi signal.
23) Cardio Trainer – Great workout app
24) Calorific – Keeps track of calorie intake
25) Fast Food Calorie and Restaurant Nutrition – List of restaurants with there menu calorie and nutrition counts
26) WebMD – Great for looking up medical info. About different symptoms and stuff
27) FirstAD – Most carry a first AD kit, why not an app to tell you what to do in en emergency situation. (Thankfully, I haven’t had to use this.)
Edited: I forgot a few other helpful apps.
28) Volume Control - Allows you to preset all volume controls on phone: media, notifications, ringinger, etc. under three different profiles.
29) Adobe Reader - Can open PDF's
30) Quickoffice Pro (paid version) - Allows you to create, edit and view Word, Excel, Powerpoint and create PDF's.
31) Car maintenance (paid version) - Set reminders for maintenance for all your cars, oil changers, fluid replacement, tire rotation etc. (Free version is the same, but just for one vechicle.)
32) Walgreens - weekley adds and easy prescription refills.