Useful especially in football (futsal / five-a-side football), but also suitable for all other team sports, Substitutions Alarm tracks match time and alert you with a sound alarm when it's time to change goalkeeper or do a substitution.

With an easy to use interface you can set match time end, how many players in your team and how many substitutions you want to do each. Players game time is automatically calculated and, at the expiration of each interval, you will be alerted by a loud alarm!

You no longer have to worry about having to constantly look at the time while you play, but just put your smartphone on the playground side! Furthermore, a triple whistle will signal the end of the game.

Main features:

- Automatic calculation of time intervals depending on match time
- Management of multiple substitutions for each player
- It also works with the phone in stand-by
- Especially useful for the goalkeeper substitution
- Few data to be entered
- Intuitive and easy to use interface