This is an universal app, by buying the Windows 8 version you will get the Windows Phone app free.
Allows Instapaper's ***paying*** subscribers to organize and read their bookmarks on their Windows 8 device. Log in and view all your folders. Progress bars let you know what's left to read. Pick your favorite font and size, switch to Night Mode and multitask all you want: bookmarks reopen exactly where you left off! Share by email or on social networks.
IMPORTANT: You need a paid subscription to Instapaper to use this app. Visit http://www.instapaper.com/subscription
With the trial version you can use the app for 7 days and it's not feature-limited.