Affirm vs Heap

Affirm and Heap (Product Insights) both appear on the Smoower Developer Ecosystem Index.

Affirm (rank #485) holds a narrow lead over Heap (rank #569) on the overall Smoower ecosystem score (38 vs 35). The gap of 3 points reflects composite signals across code, docs, community and reach.

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

Affirm carries 207 GitHub stars across 116 public repos, with 9 repositories active in the last 90 days and 4 external contributors on record. Heap shows 215 stars across 65 public repos, 6 active in the last 90 days and 1 external contributors.

Affirm is the stronger read for anyone weighting community. Heap makes more sense for teams already using its adjacent tools. The table below breaks the scores down pillar by pillar; the linked profiles cover the underlying repos, docs and community signals in full.