When comparing Grok Learning vs SoloLearn, the Slant community recommends SoloLearn for most people. In the question“What are the best resources to learn Python?” SoloLearn is ranked 9th while Grok Learning is ranked 24th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Regularly holds competitions
Has regular "Competitions" that teach Python and award certificates at the end.
Pro Interactive
Browser-based fully interactive Python programming tutorials.
Pro Beginner-friendly
Requires no prior programming experience. Designed primarily for school students, but the general public is welcome to join.
Pro Multiple difficulty levels depending on experience
Pro Intuitive UI
Pro Completely free
Pro Offline learning mode for mobile apps
Allows learning while disconnected from the net.
Pro Easy for beginners
Anyone can get started with this.
Pro Share and modify others' projects
Pro Browser-based code playgrounds
No software installation needed, just a modern web browser. On mobile devices though the mobile apps are highly recommended.
Pro Excellent mobile apps available
Pro Gamification
XP, levels, badges, certificates, etc.
Cons
Con Somewhat expensive
Prices for students start at $30 AUD per course.
Con Only the most commonly used languages are covered.
C++, Java, JavaScript, C#, Python, SQL, PHP, Swift, Ruby, JQuery, HTML, CSS. You won't find anything less common like Haskell, Erlang, Elixir, Common Lisp, Scheme, Clojure, Rust, etc.
Con Limited usefulness for intermediate or experienced programmers
No advanced coding challenges. Look for those on other sites like hackerrank.