Since December I use different App`s Kim Fleckenstein and would recommend this only. In the default setting you can adjust the volume and decide whether with or without recovery phase. The voice modulation is top! Nothing is imposed, the depth of hypnosis is determined itself. Those who are familiar with autogenic training, will feel particularly at ease in the expansion phase. Despite sleeping I often overslept the phase of suggestion! The improvement of some health problems have become apparent. Malfunctions reaches a mail to Kim Fleckenstein and receives timely response. Just Awesome !!!