When comparing Zoombowi vs exercism.org, the Slant community recommends exercism.org for most people. In the question“What are the best websites to learn to code?” exercism.org is ranked 2nd while Zoombowi is ranked 30th. The most important reason people chose exercism.org is:
Rather than merely test for code correctness, Exercism uses peer review to improve general programming techniques. Users are encouraged to comment on others' solutions, and refine their own based on feedback.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very addictive
Users gain XP for every challenge they complete, can unlock achievements and climb the global leaderboard. This provides the user with a genuine sense of progression as their skillset increases.
Pro Learn to think like a programmer
Almost everything relating to learning to code is geared toward only teaching basic syntax. Edabit goes beyond syntax and teaches its users how to think like real programmers (problem solving) in a fun and interactive way.
Pro Get instant feedback
Users can start coding immediately while getting instant feedback. If their code works, they pass the challenge. If it doesn't, they fail and must try again.

Pro Human review and feedback
Rather than merely test for code correctness, Exercism uses peer review to improve general programming techniques. Users are encouraged to comment on others' solutions, and refine their own based on feedback.

Pro Practice with production tools
Unlike many code practice websites, Exercism requires the user to develop and test entirely offline, submitting only the finished code. This promotes familiarity with essential tools and workflow, not just the bare language.
Cons

Con Custom commandline client
Exercism requires using a CLI utility to fetch and submit exercises. This is inconvenient compared to web-only alternatives, and poses an additional barrier to entry for some users.
