Measurement: Mobile Application Rating Scale All items are assessed on a 5-point scale (1-inadequate, 2-poor, 3-acceptable, 4-good, and 5-excellent). Items assessing information quality can also be rated as not applicable (e.g., in case of missing evidence or missing visual information).
How is mobile app quality measured?
Use a tool like Crashlytics to measure who is using the application, real time data about the app's performance and problems. Set performance tests baselines, using tools such as JMeter to test your APIs, and Charles to test your page load times.