I got this app on sale, and although I am usually sceptical about such things, it was worth the 6.99 price tag.
There are three stages to the hypnosis: losing weight, preparing for your surgery, and the surgery itself. The first session alone is worth the price of admission.
I am from Canada, and I am always conscious of peoples accents. In this case, The speaker is an Englishwoman with a pleasant voice, and her accent is not at all distracting. In the half-hour session 1, the hypnosis does NOT tell you that any food is bad or ickky. It merely enforces the suggestions that you will eat slowly, and eat smaller amounts of food.
Session 2 takes you through a visit to a gastric band clinic, where you meet your surgeon. This is the bulk of the half-hour recording.
Session 3 is the surgery itself, where your stomach is banded, and you are now able to eat only very tiny amounts.
I am currently on session 2, but to be honest, I still listen to session 1 once or twice a day. It is great to listen to just before bed.
This app is recommended to anyone who really, really WANTS to lose weight, and who would like an extra element of assistance while doing it. Good luck to you all!