Since the landing page mentions "semantic analysis" and based on the BAD_MIN_MAX_FUNC example in another comment, I think this is mostly focusing on logic errors that would pass a type checker/compiler without problem but show incorrect behavior at runtime. A similar product would be PVS-Studio https://www.viva64.com/en/pvs-studio/ (I haven't used it, but their articles occasionally get posted to HN.)
For comparison with Java, DeepScan is like FindBugs.
Check the reply that I have wrote for shamas.