There are three primary use cases:
- Conducting ReqIF-based Reviews: If you receive ReqIF for review and similar activities, but don’t have a ReqIF-capable tool.
- Debugging ReqIF: Many ReqIF implementations are buggy and/or are interoperable, as only a subset of ReqIF is supported. Having a fully compliant editor can really help (compare this to using a simple XML editor)
- Basic RE: There are indeed some organizations that use ReqIF Studio for requirements engineering. This works for small specs and small teams
In short, it is not intended as a DOORS replacement, which also explains the significant price difference. 🙂