Many of these are unexpected:

iPad - Top Paid

Minecraft – Pocket Edition, Mojang
Cut the Rope 2, ZeptoLab UK Limited
Heads Up!, Warner Bros.
The Room Two, Fireproof Games
Survivalcraft, Igor Kalicinski
Notability, Ginger Labs
Terraria, 505 Games (US), Inc.
Plants vs. Zombies HD, PopCap
Hide N Seek : Mini Game With Worldwide Multiplayer, wang wei
Card Wars - Adventure Time, Cartoon Network

iPhone - Top Paid

Heads Up!, Warner Bros.
Minecraft – Pocket Edition, Mojang
Afterlight, Afterlight Collective, Inc
Plague Inc., Ndemic Creations
Sleep Cycle alarm clock, Northcube AB
Facetune, Lightricks Ltd.
Cut the Rope 2, ZeptoLab UK Limited
Bloons TD 5, Ninja Kiwi
A Dark Room, Amirali Rajan
7 Minute Workout Challenge, Fitness Guide Inc

iPad - Top Free

YouTube, Google, Inc.
Netflix, Netflix, Inc.
Calculator for iPad Free, International Travel Weather Calculator
Skype for iPad, Skype Communications S.a.r.l
Microsoft Word for iPad, Microsoft Corporation
Facebook Messenger, Facebook, Inc.
Facebook, Facebook, Inc.
Candy Crush Saga, King.com Limited
Chrome - web browser by Google, Google, Inc.
Clash of Clans, Supercell

iPhone - Top Free

Facebook Messenger, Facebook, Inc.
Snapchat, Snapchat, Inc.
YouTube, Google, Inc.
Facebook, Facebook, Inc.
Instagram, Instagram, Inc.
Pandora Radio, Pandora Media, Inc.
Google Maps, Google, Inc.
Flipagram, Cheerful, Inc.
Spotify Music, Spotify Ltd.
2048, Ketchapp

Most Downloaded Songs

Happy (From "Despicable Me 2"), Pharrell Williams
All of Me, John Legend
Dark Horse (feat. Juicy J), Katy Perry
Talk Dirty (feat. 2 Chainz), Jason Derulo
Fancy (feat. Charli XCX), Iggy Azalea
Problem (feat. Iggy Azalea), Ariana Grande
All About That Bass, Meghan Trainor
Let It Go, Idina Menzel
Turn Down For What, DJ Snake & Lil Jon
Rude, MAGIC!

Most Downloaded Albums

Frozen, Various Artists
1989, Taylor Swift
Ghost Stories, Coldplay
In the Lonely Hour , Sam Smith
Guardians of the Galaxy: Awesome Mix, Vol. 1 (Original Motion Picture Soundtrack), Various Artists
BEYONCÉ, Beyoncé
Pure Heroine, Lorde
x (Deluxe Edition), Ed Sheeran
The Outsiders, Eric Church
5 Seconds of Summer (Bonus Track Version), 5 Seconds of Summer

Most Downloaded Films

Frozen
The Lego Movie
The Wolf of Wall Street
The Hunger Games: Catching Fire
Neighbors
Thor: The Dark World
Captain America: The Winter Soldier
Lone Survivor
Divergent
The Guardians of the Galaxy

Most Downloaded Indie Films

Dallas Buyers Club
12 Years a Slave
The Grand Budapest Hotel
Snowpiercer
Chef
Blue Jasmine
Her
Enough Said
August: Osage County
Bad Words

Most Downloaded Shows

Game of Thrones (S3)
The Walking Dead (S5)
Downton Abbey (S4)
Breaking Bad (Deluxe Edition: The Final Season)
Scandal (S4)
Sons of Anarchy (S7)
The Big Bang Theory (S8)
Mad Men (The Final Season)
Homeland (S3)
Modern Family (S6)

Most Downloaded Books (Fiction)

The Fault in Our Stars, John Green (Children & Teens)
Gone Girl, Gillian Flynn (Mysteries & Thrillers)
Insurgent, Veronica Roth (Children & Teens)
Allegiant, Veronica Roth (Children & Teens)
Divergent, Veronica Roth (Children & Teens)
The Goldfinch, Donna Tartt (Fiction & Literature)
The Target, David Baldacci (Mysteries & Thrillers)
The Invention of Wings, Sue Monk Kidd (Fiction & Literature)
The Husband's Secret, Liane Moriarty (Fiction & Literature)
Fifty Shades of Grey, E L James (Romance)

Most Downloaded Books (Non-Fiction)

Flash Boys: A Wall Street Revolt, Michael Lewis (Business & Personal Finance)
Unbroken, Laura Hillenbrand (Biographies & Memoirs)
Lone Survivor, Patrick Robinson,Marcus Luttrell (Biographies & Memoirs)
Heaven is for Real, Todd Burpo,Lynn Vincent (Religion & Spirituality)
Duty, Robert M. Gates (Biographies & Memoirs)
Killing Patton, Martin Dugard,Bill O'Reilly (Biographies & Memoirs)
Killing Jesus, Martin Dugard,Bill O'Reilly (History)
Uganda Be Kidding Me, Chelsea Handler (Humor)
David and Goliath, Malcolm Gladwell (Health, Mind & Body)
The Boys in the Boat, Daniel James Brown (Sports & Outdoors)

Most Downloaded Books (Free)

Private, Maxine Paetro,James Patterson (Mysteries & Thrillers)
Pretty Little Liars, Sara Shepard (Children & Teens)
Justice League: Origin, Jim Lee,Geoff Johns (Comics & Graphic Novels)
Lost in Shangri-La, Mitchell Zuckoff (History)
Twenty-Eight and a Half Wishes, Denise Grover Swank (Mysteries & Thrillers)
The Swift Programming Language, Apple Inc. (Computers & Internet)
Be My Love, Lucy Kevin (Romance)
100 Quotations to Make You Think!, Wolfgang Riebe (Health, Mind & Body)
Best Jokes 2014, Various Authors (Humor)
iPhone User Guide For iOS 8.1, Apple Inc. (Computers & Internet)

Most Downloaded Audio Books

Divergent (Unabridged), Veronica Roth (Kids & Young Adults)
Gone Girl: A Novel (Unabridged), Gillian Flynn (Mystery)
Insurgent: Divergent, Book 2 (Unabridged), Veronica Roth (Kids & Young Adults)
The Fault in Our Stars (Unabridged), John Green (Kids & Young Adults)
Allegiant: Divergent Trilogy, Book 3 (Unabridged), Veronica Roth (Kids & Young Adults)
Fifty Shades of Grey: Book One of the Fifty Shades Trilogy (Unabridged), E L James (Romance)
Unbroken: A World War II Story of Survival, Resilience, and Redemption (Unabridged), Laura Hillenbrand (History)
A Game of Thrones: A Song of Ice and Fire, Book 1 (Unabridged), George R. R. Martin (Sci Fi & Fantasy)
Mockingjay: The Final Book of the Hunger Games (Unabridged), Suzanne Collins (Kids & Young Adults)
Bossypants (Unabridged), Tina Fey (Comedy)

Most Downloaded Podcasts  

NPR Programs: Fresh Air Podcast, NPR
Stuff You Should Know, HowStuffWorks.com
The Joe Rogan Experience, Joe Rogan
The Adam Carolla Show, Carolla Digital
This American Life, WBEZ
Radiolab from WNYC, WNYC
Freakonomics Radio, WNYC
The Nerdist, Nerdist Industries
NPR: Planet Money Podcast, NPR
NPR: Wait Wait... Don't Tell Me! Podcast, NPR

Apple also publishes the iPad apps it thinks are the best quality:

http://www.businessinsider.com/best-ipad-apps-of-the-year-according-to-apple-2014-2014-12?op=1

9 of the top 10 mobile apps are owned by Facebook or Google:

http://www.nielsen.com/us/en/insights/news/2014/tops-of-2014-digital.html