You can sculpt a 3D face model without Blender using beginner-friendly tools like Sculptris (free), ZBrush Core Mini, or Nomad Sculpt (mobile)—all use simple brush workflows to pull, push, or smooth vertices and shape facial features (e.g., eyes, nose, jawline) without complex setup.
Sculptris auto-adds detail as you work, great for learning basic proportions. Nomad Sculpt works on tablets for intuitive touch-based sculpting.
For beginners, start with Sculptris (no cost) to practice face proportions (e.g., eye spacing, cheekbones) before moving to more advanced tools.