It is called Followbirds and was developed by a Portuguese team from Loulé linked to nature activities.
For those who like hiking and nature walks, bird watching can become a passion, but it is not always easy to identify the species and the place where you found them.
The Followbirds app was designed for this and guides users through the best observation points in the Algarve, with the identification of the species in mainland Portugal. It already has a list of several hundred birds sighted, and a dozen observation routes, complemented with the times of the year in which you can observe certain birds, photographs and even the peculiarities of each corner.
On the site you can access more information and also check the various places where you can do bird watching with guided tours, and paid.
The Followbirds app is free and available from the Google Play store but has the warning that it is still unstable.