Khan Academy is a non-profit educational organization that provides free education at a global level, in all subjects, aimed mainly at primary and secondary school kids.
And since quite a few years ago, it's available online and now it also has its own Android and iOS application to be able to reach the pockets of millions of users that are eager to learn and acquire new knowledge. This year even more so, since Google has granted it a 2018 Google Play Award for the best social impact, and its developers are willing to continue increasing its database.
Access as many educational resources as you can imagine... and totally free of charge.
Main features of Khan Academy's app
- Over 10,000 videos about all sorts of subjects: science, math, economy, history, TED talks, sponsored contents by the Tate Museum or the Metropolitan Museum...
- Thousands of detailed articles about arithmetics, algebra, pre-algebra, geometry, trigonometry, statistics, calculus, biology, chemistry, physics, economy, art history, civic responsibility, finance, and many more.
- Can be used offline: search for the material of your interest, include it on your list to access it easier, and download it to view it offline.
- The application saves the user's progress to be able to resume his learning process from where he left it off.
- The perfect application for both students and teachers of all levels and ages.