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Sololearn vs Exercism: catalog facts
Sololearn	Exercism
Freemium Courses are free; a paid subscription unlocks extra features.	Free Free to use.
Android, iOS, Web	Web
Short lessons that fit on a phone Wide range of languages from Python to SQL	Exercises in dozens of programming languages Optional feedback from mentors
Requires signing in Introductory depth; not a replacement for building real projects	Mentor availability can vary by language Focused on practice exercises rather than full courses
Downloadable app, Web application	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.