Simulator vs LetsDefend Mobile: 2026 Comparison
Simulator is a free cyber range training tool. LetsDefend Mobile is a commercial cyber range training tool by LetsDefend. Compare features, ratings, integrations, and community reviews side by side to find the best cyber range training fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Security teams building internal red team capacity or running incident response drills will get the most from Simulator because it lets you spin up deliberately broken Kubernetes clusters in AWS without needing to maintain custom vulnerable infrastructure. The free pricing and 981 GitHub stars indicate active adoption among practitioners who value hands-on cluster attack scenarios over theoretical exercises. Skip this if your team needs a polished SaaS training platform with guided curricula and progress tracking; Simulator is a raw sandbox, not a structured learning program.
