Jason Vale has done a GREAT job with this program. This was my first time doing a juicing program of any type. I felt great at the end of day 3, as promised! My thinking was clearer and my energy levels increased! If you are doubtful, this is a great way to get started, although you'll need a juicer and a blender (or at least access to one). The video coaching and recipe videos are Extremely helpful as the portions used by Jason in the videos are slightly different than those listed in the app. The fact the shopping list can be emailed is awesome, and a feature that desperately needs to be added to the 7lbs in 7 days app. Oddly, this app doesn't allow for video scrolling (seeking) or pausing, because on video resume the app exits (crashes), so that can be frustrating when you only need to rewatch a little section of video. This single bug is my reason for voting 4/5 stars, and I have reported it to the app support team via the email link in the app. The program is 5/5 and the app is a great idea, but just needs a little care and feeding. I see people complain about the cost, but I would've easily spent the same amount on a single meal at McDonalds, and this made me feel a whole lot better! I hope you all feel as good as I do!