More precisely, how much time after an app was approved live for first time, does it starts to appear on user recommendation and new releases tab ? I ask this because app was released today and still has 0 download (we track it live with google analytics).
Our testing, review and publishing process turnaround times vary depending on the type of app and the type of test plan that it requires. Recommendations is based on purchasing behavior, so this answer depends on the number of downloads the app receives. If an app is popular, it can take as little as a day for it to start appearing in recommendations, if it is not popular it may never appear in recommendations.