Approov Runtime Application Self Protection vs Tenable Web App Scanning: Side-by-Side Comparison (2026)

Short answer

Mobile security teams protecting APIs against credential stuffing and fake clients should pick Approov Runtime Application Self Protection for its app attestation and dynamic certificate pinning, which block MitM attacks without requiring manual certificate updates. The tool covers five NIST CSF 2.0 functions including PR.AA identity controls and DE.CM continuous monitoring, with SDKs spanning Android, iOS, HarmonyOS, React Native, and Flutter,rare breadth for runtime mobile defense. Skip this if your threat model centers on post-breach detection or you need broader endpoint visibility; Approov assumes the app itself is your enforcement point, not your SOC. Development and security teams shipping APIs and single-page applications need fast feedback loops, and Tenable Web App Scanning delivers results in two minutes or less with CI/CD integration built in. The tool covers OWASP Top 10 vectors including XSS and SQL injection across both web apps and APIs, plus third-party component scanning that catches what developers often miss. Skip this if you need deep API fuzzing or runtime protection; Tenable is a scanner, not a WAF, and prioritizes finding known issues over behavioral anomaly detection.