To save costs, energy and water it's best to shower within 5 minutes.
This app helps you by giving audio cues at 2,5, 4 and 5 minutes (the endgoal) and after 5 minutes every 60 seconds till you finished showering.

The goal of the app is to help you shower within 5 minutes and give insight on how long you actually spend under the shower, hoping to help you save money and resources.