All-time most downloaded Paid books & reference apps

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…

**************** 30 Day Money Back Guarantee - just feel free to give a try to the Pro version **************** Better designed book reader with powerful controls & full functions, supports epub…

Used by arborists, fishermen, firefighters, climbers, military and boy scouts the world over, Knots 3D will quickly teach you how to tie even the most difficult knot. With more than 125 knots, Knot…

******************************************** ** NEWS ** ** iQuran will now be sold for a fraction of its original price, down to $1.99 from $6.99. InshAllah ** the new price effectively makes iQuran…

Download one of the best Android eBook Readers now! ★The leading eBook application for the Android platform ★30+ million users from over 200 countries Features: ✔ Support EPUB, PDF formats as well…

Join the Cat in the Hat in this interactive book app as he stirs up some mischief while Dick and Sally's mother is out and about! Explore pictures, learn new vocabulary, and follow along with three f…

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 - t…

Find definitions for English words, learn spelling, study grammar and pick up new vocabulary with Dictionary.com. Look up online dictionary definitions and thesaurus synonyms with a touch! Dictionar…

Get America’s most useful and respected dictionary, optimized for your Android device. This is the best Android app for English language reference, education, and vocabulary building. And now …

Upgrade to the Premium Edition of this popular ebook reader. Features available in this premium version: * Google/Yandex Translate integration * Built-in support for PDF and comic book formats * Thu…

Lovingly written and illustrated exclusively for this Android app, iKamasutra® brings thousands of years of Kama Sutra experimentation into one incredibly fun and sensual app. View over one hundr…

구글 플레이 도서 및 참고도서 NO.1 으로 꾸준히 사랑받는 갓피플성경이 새롭게 업그레이드되었습니다! 기독교 어플 최초로 구글플레이 유료전체 1위 (2017.1.4~7) 구글플레이 유료전체1위(2014.12.8~ 12.14), 앱스토어 유료전체1위(2014.12.5~12.11) ** 묵상기록과 성경통독을 돕는 갓피플성경 ** * 매일 업데이…

Join Little Critter in this interactive book app as he shows us all the things he can do by himself! Explore pictures, learn new vocabulary, and follow along with three fun ways to read! From tying h…

The best ebook reader platform on the market: user friendly, powerful, fast, with synchronized library, this book reader provides unprecedented flexibility, speed and reading comfort. Highlight exce…

Visually stunning virtual Earth: Real satellite photos drive a simulation of day/night, clouds, seasons, sun, moon and more. Plus, our unique clock (with widget) tracks daylight, phases of the moon, …

The New International Version (NIV) Offline Bible for Android The FASTEST Bible app and most efficient way to read & study the Bible. Quickly navigate to any verse and easily access tools to hel…

** Now with cloud support! ** A free demo version is now available. See the end of this description for details. Calibre Companion (CC), recommended by calibre developers, is three applications in …

This comprehensive app empowers the law-abiding CCW (concealed or open carry permit) holder (or anyone who wants to lawfully transport a firearm in any state.) It gives you direct information needed …

Our most awesome update ever. Now includes Birds Around Me. iBird Pro, the world's best Android field guide to birds of North America, turns anyone into a birding expert. Whether you’re an ex…

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 teach…