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Popular Paid Books & Reference apps in the United States

Audubon Mammals
Green Mountain Digital
This introduction to 510 of the most common species of insects and spiders found in North America features in-depth information on each species, including habitat, range, size, and more, along with high-quality, professional photographs. Au
$3.99
66
5,000+ downloads
|
BOOKS_REFERENCE
CompTIA Super Bundle
Upward Mobility
ON SALE FOR A LIMITED TIME ONLY Packed with over 1000 questions with detailed answers, Upward Mobility’s high-value CompTIA Super Bundle app is designed to escort you to the level of an advanced CompTIA network technician. Your satisfacti
$9.99
85
1,000+ downloads
|
BOOKS_REFERENCE
Audubon Birds Pro
Green Mountain Digital
The perfect field guide for the season! Nothing beats Audubon mobile field guides! With 1 million downloads, they are the most trusted authoritative field guide collection in North America. Highest quality at an affordable price. The awar
$3.99
76
10,000+ downloads
|
BOOKS_REFERENCE
Dictionary.com Premium
Dictionary.com, LLC
The #1 AD-FREE Premium English dictionary app for Android since 2010—with over 2,000,000 definitions and synonyms from Dictionary.com & Thesaurus.com! Enjoy exclusive Premium features, like example sentences, no ads and more! ★ Time Magazi
$2.99
93
100,000+ downloads
|
BOOKS_REFERENCE
Audubon Insects & Spiders
Green Mountain Digital
The perfect field guide for the season! This introduction to 510 of the most common species of insects and spiders found in North America features in-depth information on each species, including habitat, range, size, and more, along with h
$3.99
56
5,000+ downloads
|
BOOKS_REFERENCE
Brilliant Quotes PREMIUM
lammar
This is the most advanced, yet elegant and user friendly quotation app on the market. It has been recently redesigned to accommodate modern interface and changes suggested by the community. Download this app and add long-lasting value to yo
$2.49
93
5,000+ downloads
|
BOOKS_REFERENCE
Moon Phase Pro
Udell Enterprises, Inc
<b>All-new HD imagery!</b> Spectacular, interactive 3D simulation of the moon, right down to the shadows in the craters and earthshine on the dark side. Touch screen control changes date and time as seen from your location - the moon tracks
$0.99
94
100,000+ downloads
|
BOOKS_REFERENCE
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