1. Plan
   1. 1. Identify the problem
      1. Determine need for new app
      2. Research competition and market
      3. Identify user pain points
   2. 2. Establish Goals
      1. Increase user engagement
      2. Achieve high user ratings
      3. Generate revenue from in-app purchases
   3. 3. Develop a Plan
      1. Create wireframes and mockups
      2. Develop app features and functionality
      3. Conduct user testing and refine design
   4. 4. Define Metrics
      1. Measure app downloads and usage
      2. Track user ratings and feedback
      3. Monitor in-app purchases and revenue
   5. 5. Get Buy-In
      1. Obtain approval from stakeholders
      2. Secure funding and resources
      3. Assemble development team
2. Do
   1. 1. Implement the Plan
      1. Develop app features and functionality
      2. Code app and develop UI
      3. Test app for bugs and usability
   2. 2. Collect Data
      1. Track app usage and engagement
      2. Gather user feedback and ratings
      3. Monitor in-app purchases and revenue
   3. 3. Document the Process
      1. Record any deviations from the plan
      2. Document unexpected outcomes or issues
      3. Keep detailed records of development process
   4. 4. Address Issues
      1. Identify and address bugs and usability issues
      2. Respond to user feedback and ratings
      3. Adjust plan as needed based on data collected
3. Check
   1. 1. Analyze Data
      1. Conduct statistical analysis of app usage and engagement
      2. Perform qualitative analysis of user feedback and ratings
      3. Identify trends and patterns in data
   2. 2. Compare Results to Goals
      1. Determine if app is achieving goals for user engagement and ratings
      2. Evaluate in-app purchase revenue against revenue goals
      3. Compare actual progress to timeline for development
   3. 3. Identify Deviations
      1. Pinpoint areas where the app is falling short of goals
      2. Determine if any deviations from the plan contributed to issues
      3. Identify any unexpected outcomes or issues
   4. 4. Determine Root Causes
      1. Analyze data to determine underlying factors contributing to issues
      2. Determine whether issues are related to development process or user experience
      3. Formulate hypothesis about root causes and potential solutions
4. Act
   1. 1. Develop an Action Plan
      1. Define specific actions needed to address issues identified in Check phase
      2. Develop timeline and assign responsibilities for implementing changes
      3. Secure necessary resources to make changes
   2. 2. Implement Changes
      1. Make necessary changes to app functionality, user interface, or other areas as identified in Check phase
      2. Provide necessary training or support to employees
      3. Ensure changes are communicated effectively to stakeholders
   3. 3. Monitor Results
      1. Collect data on user engagement, ratings, and revenue
      2. Track in-app purchases and revenue
      3. Monitor app performance and any issues or bugs
   4. 4. Standardize the Process
      1. Develop standard operating procedures for app development and maintenance
      2. Train employees on new processes and procedures
      3. Continuously improve processes to ensure sustained success