This app is an amazing interval training timer: select how many seconds will every workout take, and a sound will be displayed when you reach that time. The app is available for iWatch so you can use it everywhere.
Tabata Timer for HIIT is a useful app for high intensity interval training. You can configure the numbers of cycles and tabatas, customize background music and record your workout history to track your performance.
Tabata Pro is an interval timer that you can use on your HIIT workouts. It features 3 programmable timers and different options for customization. It allows you to change music and set visual alerts and a speaking coach.
Tabata Timer is going to be your best companion when it comes to HIIT workouts: with an intuitive interface, this app will allow you to set up countdowns to make sure you are doing your high intensity training properly.
TABATACH is an app for interval fitness training. Just set the intervals and it will let you know when it's time to change the exercise. Includes different types of sounds and a text to speech option to read out the exercises.
Nice Hiit is an interval timer app that features basic and custom interval. It also lets users listen to audio prompts while running. It is also designed with a simple user interface, dramatic screen colors, text-to-speech, big clock mode, and more.