Learning, for free
4 paid apps with a free way out.
Coursera Plus, free options: Free courses in math, science, computing and test prep, with practice exercises and progress tracking.Duolingo Super, free options: Core lessons, streaks and leagues in every course, with ads between some lessons.Rosetta Stone, free options: Free lessons in many languages with short daily exercises, streaks and speaking practice.Udemy, free options: Free coding curricula with hands-on projects and certifications, with no ads.