ReChoreo (coming soon)
With ReChoreo, practicing a certain part of a choreography is made easy! You can select the part of the music that you want to repeat, choose the number of repetitions and the duration of pauses in between and the app will automatically play the desired part in the specified loop. This is useful for perfecting part of a choreography without the need to run to your iPhone to rewind the music by hand every time.
The privacy policy for the app can be found here.