This app is low-quality in terms of resolution with the videos and photos. The app is not intuitive and pieced together with hyperlinks to myriad websites. IRT and LPRT rankings are incomplete and the videos do not play corresponding audio with the instructional clips. The provided instruction is generic and only if a person signs up for the exclusive perks would they get anything beyond the very basics. All of the instructional video topics are free for anyone with YouTube access from other players and coaches without having to pay. Would like to see interactive videos to demonstrate strategic things such as court position, opponent shot anticipation, moving with the ball, when to go offensive vs. defense, mental preparation, nutrition, routine, days to play when you have a tournament coming up, opponent styles, identifying your own style/weaknesses, etc. The knowledge is there but finding a better medium to get the information out is vital to sustaining a successful mobile app. Also, why is it only for ages 17+ if people want to grow the game of racquetball with juniors?