App engagement and user retention: The definitive guide

App engagement is the cornerstone of successful mobile apps, driving customer loyalty and lifetime value.
Key metrics include sessions, retention, active users, DAU/MAU ratio, and churn.
Effective onboarding can boost retention by 50%.
Personalization and multi-channel communication (push notifications, in-app messages, email, deep linking) are essential.
Properly used push notifications offer genuine value; in-app messages increase retention from 49% to 74% when personalized.
Monetization relies on data analysis, surveys, free trials, and incentivization.
Re-engagement strategies include segmented push notifications and reaching out to uninstalled users.
Continuous optimization based on user feedback and data is crucial for a bullet-proof engagement strategy.