50 Languages
50 Languages, formerly Book2, is a collection of websites, downloadable audio files, mobile apps, and laptops. In addition, interpretation is accessible in 56 languages. It's free, save for the optional books, and it's been referenced in online language learning studies.
Repetition is required while learning a new alphabet or numbers.The app 50 Languages is one of the best resources you'll find for this kind of study. There's a lot more than numbers and letters in this program, like vocabulary sets on animals, sports, telling time, body parts, etc. Learn 50 languages for free using your original language, with 100 sessions that teach you the basics of the language.
It's not difficult to download this application so you can learn anytime and anywhere, of course for free, what could be better!
Website: https://www.50languages.com/?user_lang=EM
Facebook: https://www.facebook.com/50LanguagesLLC/
For iOS:
https://apps.apple.com/us/app/50languages/id487070134
For Android:
https://play.google.com/store/apps/developer?id=50LANGUAGES+LLC