Consistent with the key performance indicators (KPIs) for subscription-based services like Spotify, my primary focus would be on metrics related to acquiring customers, retaining them, and determining their lifetime value. This would encompass the number of new users or subscriptions, the churn rate, average revenue per user (ARPU), and the duration of customer engagement. Additionally, metrics related to user engagement, such as the count of active users, session duration, usage frequency, and the creation and sharing of playlists or podcasts, are also crucial. These metrics provide insights into user engagement with the platform and highlight areas needing improvement to enhance their overall experience. Furthermore, it is vital to assess the app's performance metrics, including load speed, streaming quality, and any glitches, as these factors directly affect user satisfaction and can impact the churn rate.