Android App work

Need to change links in existing simple app. Simple app has only 5 info screens: - news (rss link) - images (rss link) - videos (rss link) - facebook (link to a group) - links (html links) I need to change news rss link. It differs from the previos. So you will need to change code to parse it. Images rss link - just to change link. No coding required. Link has the same format. Videos rss link - just to change link. No coding required. Link has the same format. facebook page - - just to change link. No coding required. Link has the same format. Html links - no changes, just to add 1 html link in existing list. Also I need small modification. When somebody uses an app pop up window should appear and ask to rate the app in Google Play with 3 buttons: Rate Now, Rate later, Do not rate. If rate later the popup window appears the next day or next usage (but not this day again).