Duolingo vs Starling Bank

Duolingo and Starling Bank both appear on the Smoower Developer Ecosystem Index.

Duolingo (rank #338) holds a modest lead over Starling Bank (rank #625) on the overall Smoower ecosystem score (43 vs 33). The gap of 10 points reflects composite signals across code, docs, community and reach.

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

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. Starling Bank shows 195 stars across 3 public repos, 3 active in the last 90 days and 0 external contributors. The star gap on its own does not decide the comparison, but Duolingo's footprint is roughly 8.8x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting community. Starling Bank looks better where reach 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.