Feedity - Create RSS feed for any webpage or podcast. Extract data and turn dynamic websites into spreadsheet or API. Feedity is an online RSS feed generator and podcast feed builder tool. Display feeds on website.
Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
WebRSS - RSS Widget - RSS to HTML - Display RSS for Free with Web RSS
App Annie - App Annie is a marketing analytics tool available for apps of all kinds. With App Annie, you can track sales, traffic, and a variety of other factors pertinent to monitoring an app's trajectory.
Feed.exileed.com - This service transmits your favorite social networks by RSS.
appfigures - Cross-platform app store analytics for all of your mobile apps.