What information do I collect?
Its GOOGLE that collects your information.
This app, via GOOGLE modules, collects data gathered by GOOGLE. E.g. data for analytics (android version, phone model, resolution, etc see GOOGLE privacy policy for more info), data for ads.
Their privacy policy can be read here https://policies.google.com/
disqus also collect information and their privacy policy can be read here https://help.disqus.com/en/articles/1717103-disqus-privacy-policy
How do I use the information?
I use the information that GOOGLE collects by going to Play Developer Console, and read it right there, to read your review, see whats the problem, and reply to you. from AdMob ad dashboard to see ads statistics. from google analytics to see analytics.

What information do I share?
Everything that GOOGLE collects is shared to GOOGLE. Their privacy policy can be read here https://policies.google.com/