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Popular Paid Books & Reference apps among people in their thirties

KeyChord - Piano Chords/Scales
Umito
This 2.0 version has been featured on the Android Market and made it to the top selling list!! == Winter sale: 33% off == Keychord is the dynamic dictionary / reference app for piano chords and scales. Use it to find all the scales and ch
$2.74
92
10,000+ downloads
|
BOOKS_REFERENCE
Word Solver
White Urchin Ventures Inc
Word Solver is a handy cheat and solver application for Games like Scrabble and Words with Friends. It uses the a large open-source Dictionary to find all the possible words you can make from the tiles you have. Recent changes: Major Relea
$1.99
81
10,000+ downloads
|
BOOKS_REFERENCE
iMissal - #1 Catholic App
Cantcha, Inc
iMissal has been granted an official Imprimatur from the Catholic Church and is approved for use! In addition, iMissal is the only Catholic app of its kind that does not require WIFI/Cellular to access Mass Readings! You get access to Mass
$4.99
93
10,000+ downloads
|
BOOKS_REFERENCE
Offline dictionaries pro
NGHS.fr
Offline dictionaries allows you to browse dictionaries without a network connection, such as when you're on a plane, traveling abroad, out of cellular tower range or if you want to save battery! Download dictionaries you want to the SD ca
$2.07
88
10,000+ downloads
|
BOOKS_REFERENCE
Korean->English Dictionary
QTranslator
* QTranslator cannot be supported after G Pro 2. * You cannot use and purchase TTS(Text-to-speech). ------------------------------- 1. This dictionary app is only supported on LG mobile devices with QTranslator or Dictionary v3.0 installe
$4.31
46
100+ downloads
|
BOOKS_REFERENCE
iBird Yard Plus
Mitch Waite Group2
■ IBIRD 3.1 FOR NEXUS 7 COMING SOON ■ CURRENT VERSION 3.0.8. ■ SEE http://tinyurl.com/ibird-pro308 ■ If you have install issues delete iBird_Yard folder before updating ■ Extraction takes < 3 minutes, Validation < 6 seconds ■ Reviews befor
$0.99
88
5,000+ downloads
|
BOOKS_REFERENCE
Camera Translator
Edward Kim
Camera Translator is the easiest and most accurate way to translate text using your camera. With this app, you can translate text simply by taking a picture of it! Here's how to do it: (1) Take a photo of the text you would like to trans
$3.99
70
1,000+ downloads
|
BOOKS_REFERENCE
Wikidroid Plus
Sirius Applications Limited
This is an unlock key for Wikidroid. After installing, Wikidroid will no longer display any advertisements. Please note that Wikidroid must be installed to use this key! This is not an app - it just removes advertisements from Wikidroid.
$1.82
87
5,000+ downloads
|
BOOKS_REFERENCE
English->Korean Dictionary
QTranslator
* QTranslator cannot be supported after G Pro 2. * You cannot use and purchase TTS(Text-to-speech). ------------------------------- 1. This dictionary app is only supported on LG mobile devices with QTranslator or Dictionary v3.0 installed
$4.31
41
500+ downloads
|
BOOKS_REFERENCE
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