This app shows the changes in the tidal height of the ocean near Costa da Caparica (Portugal, Europe) along the current and coming days. The app aims to be minimalistic, free to use and without ads. I developed it for my own needs (I like to take regular walks on the beach, preferably during low tide), but it is freely available for everyone to use.
Note that the app only contains data about a single location, that is, Costa da Caparica. Therefore, it will probably be most useful to those who live near or plan to visit the place.