Below is the top 50 free applications in the Reference category(data is pulled from iTunes). We also have a list for the best paid reference iPhone apps.

• Google Translate – Google
• Google Search – Google
• Bible – LifeChurch.tv
• Dictionary.com – Dictionary & Thesaurus – Free – Dictionary.com, LLC
• Dictionary. – Farlex, Inc.
• Merriam-Webster Dictionary – Merriam-Webster, Inc.
• Wikipedia Mobile – Wikimedia Foundation
• Quotes Wallpapers & Backgrounds 25,000+ – JokeShuffle.net
• Dictionary! – Catlin Software, LLC
• WhitePages – WhitePages.com
• Ancestry – Ancestry.com
• Ask.com – Ask.com
• iHandy Translator Free – iHandySoft Inc.
• Free Translator – Codesign
• Slango Lite – Free Urban Dictionary – SchroederDev LLC
• 55,000 Amazing Quotes – Khalil Slimi
• Dictionary – Catalystwo Limited
• Password Wallet Lite (Free Secure-safe Keeper Data Vault ! Password-wallet App & Pro Wi-Fi Transfer Backup Manager for iPhone) – Pro Manager Studio for HD Apps of Photo, Video, Music, Picture, Password, Download, Reader, Browser, Player, Scanner, Editor & Wallpapers
• Walkthrough for Angry Birds (FREE Edition) – Apperleft Ltd
• Tips & Secrets for iPhone – Malibu Apps
• Grand Theft Auto 4 (Cheats & Tips) – Jaouad Slimi
• Bing – Microsoft Corporation
• Bible ✟ – Faith Comes by Hearing
• White & Yellow Pages – Avantar LLC
• JOKES. – Free Style
• Holy Bible – Paul Avery
• Battery Boost – Appventions
• FreeSaurus – The Free Thesaurus! – WeesWares
• Black Ops Ultimate Utility™ lite (for Call of Duty) – Brass Monkeigh Apps LLC
• Weed Strains 3D Free: joinTogether – Alpha Kua
• 有道词典本地增强版 Youdao Dictionary Professional Edition – Netease Youdao
• Poptropica® Official Tips & Tricks – Mammalfish
• Quotes# – Futerox Interactive
• Slangbot Lite — An Urban Dictionary – Avocado Hills
• Cheats for XBox 360 Games – SchroederDev LLC
• Spanish Translator Free. – Odyssey Translator
• WordReference.com Spanish-English dictionary – WordReference.com
• Bible! – Logos Bible Software
• How to Tie a Tie Free – ArtelPlus
• World Map 2012 Free – Appventions
• A+ Guide – For Call of Duty : Modern Warfare 3 – Khalil Slimi
• LDS Gospel Library – The Church of Jesus Christ of Latter-day Saints
• Yahoo! Search – Yahoo!
• Free Apps – Keep Creative Solutions Ltd
• Cheats for PS3 – SchroederDev LLC
• JOKES ☺ – Michael Quach
• Optical Illusions! – SusaSoftX
• 네이버 – Naver – NHN Corp.
• Cheats for The Sims 1, 2 and 3 – Chris Phillips
• Free Translator with Voice – More than a dictionary – Eagle Capital LLC.