Good learning tools do not have to cost money. This collection covers free and low-cost apps that students, parents and self-learners can use for revision, language practice, classroom work and general research: Khan Academy, Duolingo, Google Classroom, Wikipedia and Google Translate.
Each overview explains what the app is good for and where it falls short, because no app replaces a teacher or a textbook. Khan Academy suits clear explanations of school-level maths and science, Duolingo builds a daily language habit, Classroom handles homework, and Wikipedia and Translate help with background reading. If you are building a study routine, read our guides on free tools for students and on practising spoken English in thirty days.









