For the app, we are using Apple’s App Analytics for now.
Founder & CEO - Skout Deals
App Analytics via Apple shows us how many people have downloaded our app, as well as how many people are actually using it.
Co-founder - GoKid
Measure user engagement, marketing campaigns, and monetization for your iOS apps with App Analytics on iTunes Connect. App Analytics has data you won’t find anywhere else. It’s included with Apple Developer Program membership and requires no technical implementation.
Visit the website: https://developer.apple.com/app-store/app-analytics/