Very worthwhile
I found Vipassana by doing some other techniques for a long period of time and seeming to get calmness but no enlightenment. Listening to Tara Brach i found Vipassana. Although I believe going to a Vipassana retreat is probably the best way to learn and get the best Vipassana practice, this app after now have done 15 hrs is really working I beleive. I only use this app now and will continue to. It would be great if I could dim my screen whilst meditating (but this may just be my device settings. Thank you Russell