Duolingo vs Hotjar

Duolingo and Hotjar (Product Experience Insights Tools) both appear on the Smoower Developer Ecosystem Index.

Hotjar (rank #317) holds a narrow lead over Duolingo (rank #338) on the overall Smoower ecosystem score (44 vs 43). The gap of 1 points reflects composite signals across code, docs, community and reach.

On code quality (the state of repositories, tests, releases and polish), Hotjar is ahead of Duolingo. On education (docs, guides and learning material for developers), Hotjar is clearly ahead of Duolingo. On community (issue response, PR reviews and discussion health), Duolingo is ahead of Hotjar. On reach (how visible the ecosystem is beyond its own repos), Hotjar is ahead of Duolingo. On momentum (release cadence and how fast the ecosystem moves), Duolingo is ahead of Hotjar.

Duolingo carries 1,721 GitHub stars across 12 public repos, with 8 repositories active in the last 90 days and 11 external contributors on record. Hotjar shows 52 stars across 2 public repos, 1 active in the last 90 days and 2 external contributors. The star gap on its own does not decide the comparison, but Duolingo's footprint is roughly 33.1x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting community. Hotjar looks better where education is the deciding factor. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.