Hey, G.! I hope you and the kidlets are doing well!
Grocery IQ is another shopping list you could look into. Like the others listed, anyone can add to it so the list is always updated. It also allows you to create lists for different stores - like hardware store, grocery store, etc, or even more specific like Target, Jewel, etc. And you can include the prices of each item you buy so it allows you to compare the prices at each place you shop to see where you'll get the best deal for each item. I THINK there's also a way to download coupons, but I've never actually used that aspect of the program so I can't say for sure.
As for adult games, I'm a huge Boggle fan. Crazy, I know. I play it anytime we're stopped a train or I'm waiting for the boys to finish one of their activities. And Chuzzle is another one. So addictive!
My kids love to play Angry Birds, Paper Toss, Grover Special, Talking Carl, and Cut the Rope. But here is a pretty good list of kids apps that a mom from my Moms group compiled for iPhone users with younger kids:
PBS kids
Duck Duck Moose
Thomas Activities
ABC Phonics
City Vehicles
ABC Song
Counting Lite
E flash English cards
Parents Flash cars
Gumbo Lite
I Birthday
Learn to Talk Sampler
Magic Match
KFP2story
Letter Quiz
Phony Phone
My First Apps (alligator apps)
Peekaboo
Playgrounds (for us)
Ocean Lite (peekaboo)
Monkey Preschool Lunchbox
Bugs and Buttons
TocA doctor
TocA house
TocA store
Body Puzzle ( this is harder)
Preschool Memory Match
Balloon School - kids can play a popping game which helps them master their numbers and letters and potentially colors too
Flash Cards and Flash Cards 2 - Flash Cards 2 actually has a match/memory game
Elmo's Monster Maker
Dora Rainbow Slide
I Write Words
Talking Tom - which is just an animated cat that kids can make do stuff
And some more from a blogger I follow:
Letter School ($2.99, view in app store)
Monkey Preschool ($0.99, view in app store)
WATCH Disney Junior (free, view in app store)
Zoodles (free, view in app store)
Taking Pictures With Dinosaurs (free, view in app store)
Battleship (free, view in app store)
PBS Kids (free, various game and videos)
iLoveFireworks Lite (free, view in app store)
Doodle Buddy (free, view in app store)
Flow Free (free, view in app store)
Barefoot Books World Atlas ($4.99, view in app store)
Write My Name ($3.99, view in app store)
I know your boys are a little older, so they may not like any of these. But your daughter may like some of them!
Good luck!
~P.