Talk about Onavo, whatever you guys do NOT install that Onavo Count app or Onavo Extend.
This app routes every piece of data through onavos servers.
Data rates will be slow cause now you're depending on onavos servers before your data can be sent or reach its destination.
Every photo, text, search, username password etc.. will be sent through onavos servers. Im not comfortable with that. It will also break your email,hotspot, vpn and will also install a new profile on your phone.
Because the app is free most likely the dev will make his money by selling your data and info to others. You're not the customer using this app, you're the product.
Stay away.