And one more thing. The app will have only 1 subscription package which will allow full access to the whole of the app for 12 months.

Thank you for replying to my post, But there are many apps on App Store with this kind of practice. Almost all the Fitness apps take your age, weight and body stats etc, build up a fitness plan (Although I know that the plans they make are always same and they just show some random GIFs of making Plans) and then present you with paywall. That particular app cannot be used until the user pays for the subscription. There are many apps for Example : "Workouts by Muscle Booster, Fitness for Muscle growth, WalkFit etc" using this practice and the fact that these apps are published very recently makes me wonder. My app will be calculating Fitness plan, giving BMI, other vital body stats calculations, fitness and diet plans before it presents with paywall. My biggest concern is is the above shown UI (where Tab View Controller is presented in this way) will be acceptable? Because even Apple uses this on App's rating and reviews page on App Store and I'm more worried about UI.