A free program for Android, by Optimist.dev.
memo is a quick-and-easy way to learn new words in Spanish, phrases, and idioms using short, memorable content. It is a fast, reliable, and effective way to increase your vocabulary, learn Spanish at your own pace, and improve your language skills.
The app lets you choose your own language level. memo has a simple, yet innovative, user interface. Each day, you will receive a memo containing the most relevant phrases and idioms, and you can skip any day you do not want to learn a phrase or idiom. memo works on the principles of gamification.
