Interval running and sprints play online

Interval Running is a simple App that allows you to run wearing only your Android smartwatch.
Set the fast time, the slow time and the number of repetitions, at the end of each phase the watch vibrates and, if the display is off, it turns on again to view the progress of the exercise.
Speed changes help improve aerobic endurance.
It is translated into the following languages: Afrikaans, Amharic, Arabic, Belarusian, Bulgarian, Bosnian, Catalan, Czech, Danish, German, Greek, English, Spanish, Estonian, Farsi, Finnish, Filipino, French, Irish, Hausa, Croatian, Haitian Creole , Hungarian, Igbo, Icelandic, Italian, Hebrew, Japanese, Georgian, Korean, Luxembourgish, Ganda, Limburgan, Lingala, Lithuanian, Latvian, Malagasy, Macedonian, Mongolian, Malay, Nepali, Norwegian, Chichewa, Polish, Pashto, Portuguese, Romanian , Russian, Kinyarwanda, Slovak, Slovenian, Shona, Somali, Serbian, Swedish, Tajik, Thai, Tigrinya, Turkish, Ukrainian, Chinese (Simplified), Chinese (Traditional)
Now you can also try to measure your speed over 60 / 100 / 200 meters, without the need for reference points on the spot.
All you need to do is stay outdoors and start the "flat meters" exercise: after hooking up to the GPS, you can start the countdown and at the end start running: as soon as you reach the set distance, the smartwatch will ring, vibrate and turn on again.
Test your speed!