According to the Eyal Hilzenrat (Vice president of products and partnerships at YouAppi), mobile marketing is the future of marketing and installing the app is the beginning of this journey. And to the performance of your mobile marketing, use the Engagement metrics, Revenue metrics and Interest Metrics. KPI to mobile marketing are:
• Number of times the mobile app was accessed during the first 24 hours / first week (after installation)
• Permission granted to the app
• Time spent in-app
• Number of screens/pages accessed during in-app visit
• Number of subscriptions / registration
• Purchases
• Number of items placed in a shopping cart
• Number of articles read
• Number of pages visited
• Social Shares
• Retention rates
• Brand awareness
Read more at: http://www.adweek.com/socialtimes/top-12-key-performance-indicators-for-maximizing-mobile-app-revenue/621659