Music player for rehearsal; $5.99 in the iTunes store

With the easy-to-use DanceMaster app, the days of mixing up and losing music cues are over. Each time you pause a piece of music, DanceMaster automatically returns to the last place you started from—no more searching frantically for the start of the fouetté section each time you stop to give a correction. You can also add and name quick-jump cues within the music and then share those with your faculty. Rehearsing on your own? The app can speak cue names aloud to remind you what comes next. Any remote control that’s compatible with your device—like standard iPhone earbuds or external Bluetooth remotes—can be used with the app. Keep your hands free and focus on what needs your attention: the dancers.