| Capability | Extension | API |
|---|---|---|
| Run checks on any web app | Yes (local) | Yes (needs URL, auth if required) |
| Check categories (v1) | Signup, Activation, Copy, Momentum, Technical | Same (v1) |
| Export HTML report | Yes | Yes |
| Schedule/CI | No | Yes |
| Rate limits | N/A | Moderate (see API docs) |
Start with the extension. Move to API when you need automation, CI, or org-wide benchmarking.