Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Apple App Analytics - Apple's very own iTunes Connect App Analytics
HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.
Adapty - Low-code price personalization for in-app subscriptions
phpMyFAQ - phpMyFAQ is a world’s most popular mobile-friendly, feature-rich and open-sources FAQ software that uses PHP 5.
Qonversion - The subscription data platform for mobile-first companies