SprintReady.
Self-Serve (PAYG) — 30 free credits for 30 days, no card required. Work email, one free trial per company.
What your 30 free credits cover: one short document, about 2–3 pages or around 10 requirements, processed end to end so you can see the real output: sprint-ready tickets with source citations, flagged gaps and contradictions, and the duplicate check. For the best result, upload a single short section of a spec rather than a whole specification; a large document will run out of credits part-way. Credits last 30 days, and you can buy more at any time.