Round Timer X Lite - Interval Timer for timing exercises like interval training, HIIT, tabata, stretching, rounds during boxing / MMA / martial arts training etc. This is the free lite version with limited functionality. Amount of rounds is limited to 5 and maximum time of a work / rest period is 3:59. Check http://rtx.leeko.org for complete list of differences between lite and full versions. Notice: In some phone models you must enable "Warning tones" in your phones settings / profiles to hear the sound alerts.