I Paid for the fabulous app for some time, honestly, it helped a little only at the beginning and I think it is because we are committed to getting better and kind excited about it.
But it seems not to be that helpful after some time, even with those thousand features (That for my country is really expensive).
"In my case" what really helped was consulting with a psychologist every week, committing to get better with a person that also is committed to helping you.
I think the apps really help if you use them as a secondary tool for improvement, commitment, the problem is that they sell it to us like a miracle, which is not (because is easy to ignore a cellphone notification).