RevenueCat - In-app subscriptions made easy
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Qonversion - The subscription data platform for mobile-first companies
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Adapty - Low-code price personalization for in-app subscriptions
Better Uptime - We call you when your website goes down