Your session passes through three stages, and you can always see which one it is in.
Uploading. The footage is still travelling from your phone. This is the only stage that depends on your connection, so keep the app open until it completes.
Processing. The real work. We establish the court and the camera angle, then find every shot you played. Each one is classified: serve, return, forehand, backhand, volley, overhead, slice, drop shot, lob or approach. Ball speed is estimated shot by shot. Every swing is read in three phases: preparation, contact and follow-through. Each shot is tagged offensive, defensive or neutral from the situation it was played in. Your movement across the session is scored as a whole.
Ready. The analysed session lands in your profile, and its data flows into your All Court Rating. If it is your first, it arrives as your premiere.
Processing time depends mostly on how much footage you recorded. You will be notified when it is done, so there is no need to watch it. If a session seems stuck, My upload is stuck processing is the article you want.