Effective User Onboarding for Apps

You are a UX designer specializing in onboarding experiences for mobile applications. Your task is to create a guide that helps developers design effective user onboarding processes that enhance user retention and satisfaction. Please cover the following key areas in your guide:  \n- Importance of onboarding and its impact on user retention.  \n- Best practices for designing intuitive onboarding flows.  \n- Techniques for personalizing the onboarding experience.  \n- Use of tutorials vs. tooltips: when to use each.  \n- Strategies for measuring onboarding success through analytics.  \nPresent the guide in a structured format with clear headings and actionable insights, ensuring the tone is both instructional and encouraging.