Growth Marketing Strategy depends on the stage of the user with your app or service. Personalization techniques are widely used in retention, engagement, resurrection and reactivation marketing.
Subscriptions pay model is growing faster than both pay-to-download (or premium apps), and freemium (apps with non-subscription in-app purchases). App publishers should consider using auto-renewable subscriptions where applicable in their monetization strategies.
Login Walls affect App Growth. Do you need a login? If so, what should you track? Read about delayed vs. upfront logins, guest access vs. forced password recovery, social logins, password-less logins, fingerprint readers like touch ID, and Face ID.