Apple App Analytics - Apple's very own iTunes Connect App Analytics

Nudgify - Nudgify is a Social Proof App that includes FOMO, Urgency and Review Nudges. Adding Social Proof notifications to your site helps you build trust and increase conversions on Shopify, Wordpress or any other platform.

My Motiff - Allowing you to stay connected in realtime

NotificationX - Best social proof and FOMO marketing solution for WordPress to increase conversion rates.

Usage Analytics in appFigures - Track usage for your app along side downloads, ranks & more

Fomo - Fomo turns your site into the online equivalent of a busy store