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Free vs Paid Study Tools: What $16 a Month Actually Buys
Khan Academy and Photomath scored higher than most paid services in our teacher grading. Here is when paying still makes sense.
August 22, 2026 · 3 min read
Teachers graded Khan Academy (92) and Photomath (85) above Chegg (84), Quizlet (76), Grammarly (74), Course Hero (71) and Brainly (58). Free is not worse here.
Pay for Chegg when
Your course uses a textbook Chegg covers and you want worked solutions to check your problem sets.
Pay for Quizlet Plus when
You study from flashcards daily and want Learn mode, practice tests and no ads.
Pay for a tutor when
You have been stuck for more than a week. One Wyzant hour beat every app in our test.
Do not pay for
Answer services on their own. The free tools teach more.
» See the full rankings: Best Free Homework Help Sites .