Duolingo vs Spreedly

Duolingo and Spreedly (Simple and secure PCI compliance and payment forwarding.) both appear on the Smoower Developer Ecosystem Index.

Duolingo (rank #338) holds a modest lead over Spreedly (rank #728) on the overall Smoower ecosystem score (43 vs 30). The gap of 13 points reflects composite signals across code, docs, community and reach.

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

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. Spreedly shows 418 stars across 67 public repos, 10 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 4.1x larger, which usually shows up in downstream signals like inbound issues and third party integrations.

Duolingo is the stronger read for anyone weighting momentum. Spreedly looks better where code quality 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.