The app is rather customizable, letting you tweak font size and color, adjust a document's margins, and even change the size of the zones you'll tap or swipe to turn the page, or call up the app's menu. If you need more options, there are a few in-app purchases to unlock premium features. These are largely cosmetic, and include extra colors for the highlighting option, a "vintage paper" option that makes your documents look weathered, and the ability to set custom backgrounds from photos stored on your device. You'll also have to pay for the option to create custom categories -- say, a section for books you've yet to read -- and for the ability to annotate what you're reading with notes. Note-taking is about the only thing I would really want out of that pack, but your mileage may vary. Each of those options cost 99 cents, or you can buy the whole bundle for $2.99 -- not a bad deal if any of these features catch your eye.
Sluggish app, slower competition
Bookviser is a great way to load your Windows Phone up with books to read on the go, but its performance isn't all that great. I tested the app on the Nokia Lumia 925, it's page-turning animations often struggled to keep up with my swipes. That said, things improve a bit when you turn those fanciful animations off, and I noticed that performance seemed a bit better on smaller books -- massive tomes like Moby Dick just seem to bring the app to its knees. Granted, the app is nice and nimble when you're sliding through menus, browsing for more books, or downloading titles, but you'll spend dramatically more time reading books than looking for them, so the sluggishness is a bit of a bother. It is by no means a deal breaker, but the occasionally slow or choppy transitions can be a bit bothersome.
But here's where being a Windows Phone exclusive works out in Bookviser's favor: competitors aren't really chomping at the bit to support the platform. In the world of e-books, Amazon remains the juggernaut to beat. But the Windows Phone incarnation of the Amazon Kindle app lags behind its iOS and Android brethren. On Windows Phone, Amazon Kindle lets you change the size of text and a book's margins, tweak the color scheme and display brightness, and set bookmarks. You'll also have access to the vast Kindle library, and your reading progress is synced between devices.
But there's no in-line dictionary, downloading new titles kicks you out to the mobile browser, and -- most importantly here -- you can't add your own files. You also can't highlight passages of interest, make annotated notes, or a myriad of other things that are available in the iOS and Android versions of the app. If you're wholly enmeshed in the Amazon ecosystem then the official Kindle app remains your best bet, but fans of DRM-free e-books will find Bookviser to be a much friendlier option.
Bookviser Reader's success comes by way of Amazon's failure on Windows Phone 8. If an update brought the Amazon Kindle app's features up to parity with its Android and iOS versions, there would be few reasons to even consider Bookviser.
But as it stands, flexible customization options, useful book search tools and neat integration with public book catalogs make Bookviser the reader to beat on Windows Phone 8.