A free program for Android, by Kojitapp.

This application is an excellent learning tool and a memory aid. It includes a lot of specialized vocabulary, which makes it the perfect app for learning a new language. It will help you improve your writing and speaking skills. This app is ideal for beginners, as it has an easy and intuitive interface. It also has different difficulty levels, so you can start with the easy ones and work your way up.

Spanish Crosswords is useful for both students and for people who want to learn the Spanish language.