In Evripos strait, the water stream changing nearly every six hours, and depends mostly on Moon and the tide it causes. The application is calculating, the moon and sun geographical, position and trying to calculate the tide that their attractive forces create. Then using a statistical study on the stream, it finds the times in the day that stream change trend.
This download is totally safe. Philippos Chamalidis is the developer of Evripos Stream Forecast that can be found in the Educational category. Over 100 users installed the tool and the latest update was released on Jan 3, 2017.