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Currently hot Paid Books & Reference apps

WolframAlpha
Wolfram Group
Remember the Star Trek computer? It's finally happening--with Wolfram|Alpha. Building on 25 years of development led by Stephen Wolfram, Wolfram|Alpha has rapidly become the world's definitive source for instant expert knowledge and computa
$2.99
92
500,000+ downloads
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BOOKS_REFERENCE
Farm 123 ~ StoryToys Jr.
StoryToys
★ ★ iLounge Kids App of the Year 2012 ★ ★ ★ ★ Editor's Choice Award, Children's Technology Review ★ ★ ★ ★ Mom's Choice Gold Medal Winner ★ ★ "There's literally nothing more that we'd add to this title....one of the best number-teaching
$2.80
88
10,000+ downloads
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BOOKS_REFERENCE
NIV: The Bible Study App
Harper Collins Christian Publishing
This version of the Olive Tree Bible Study App includes the NIV and has been designed for deeper Bible study. Join over 4 million users on “The Bible Study App” and learn from great scholars through thousands of resources including commenta
$9.99
90
10,000+ downloads
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BOOKS_REFERENCE
Animated Knots by Grog
Grog LLC
Named best knot-tying app by Outside Magazine! Learn to tie knots the fun and easy way from the creators of the web's #1 knot site. Animated Knots by Grog is simply the best, most comprehensive teaching and reference tool for boaters, climb
$4.99
91
10,000+ downloads
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BOOKS_REFERENCE
Maxwell Leadership Bible
Tecarta, Inc.
The Leadership expert, John Maxwell, brings an in-depth look at God's laws for leaders and leadership. The content of the current Maxwell Leadership Bible is revised and updated to incorporate Maxwell's works since the first release of the
$7.99
97
50+ downloads
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BOOKS_REFERENCE
Zenith Mobile Telescope
Wikitude GmbH
Zenith is a telescope for your Android phone. Explore the night sky by pointing your mobile phone towards sky. Watch hundreds of stars, their constellations, and our solar system's planets. View great images of galaxies and nebulae from the
$4.12
82
5,000+ downloads
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BOOKS_REFERENCE
Moon+ Reader Pro
Moon+
Better designed book reader with powerful controls & full functions, supports epub, pdf, mobi, chm, cbr, cbz, umd, fb2, txt, html, rar, zip or OPDS formats. ☀Additional benefits in pro version: ✔ Ad-free, faster & smoother ✔ Shake the pho
$4.99
93
100,000+ downloads
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BOOKS_REFERENCE
Encyclopedia Pro (Wikipedia)
AppsUnlimited wiki
Wiki Encyclopaedia Pro Offline presents Wikipedia ®, conveniently formatted and speeded up for your Android device - even without an internet connection! This Pro Offline version is ad-free. Offline Wiki databases in over 30 languages can
$1.66
81
1,000+ downloads
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BOOKS_REFERENCE
English Writing Rules Ultimate
Top of Learning
This app contains 60 HD shareable Flashcards Wallpaper. Learn how to Perfect your English writing with 60 Flashcards, that resumes the English writing rulesand best practices. This app helps you to have many alternatives to write the sa
$0.99
0
1+ downloads
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BOOKS_REFERENCE
Bible Offline PRO
MrRocco
Bible Offline Features: - Works Offline - 75 different bible translations available to download. - Installation in SD Card (Version 2.2 or higher). - Search words inside the Bible - Support for small screen phones. Like the Xperia Mini - F
$2.32
93
5,000+ downloads
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BOOKS_REFERENCE
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