Arbolapp is a free app that anyone can use, based on the scientific research carried out at the CSIC's Royal Botanic Garden. Its contents include: - 143 species described on 122 information sheets: all the native trees as well as those that most frequently become established in the wild in Andorra, continental Portugal, peninsular Spain, and the Balearic Islands. Each species entry includes a distribution map, a brief description and one or more photos. - 2 ways to search (directed and open