3D model script for mesh and vertice deformatoin on mobile using touch and drag deformations by the user

For my 3D model I am trying to find a deformation script that will allow me to touch and drag vertices with an assignable user-controllable fall-off radius to stretch or distort the 3D Model at runtime for the user. I’ve looked into lean touch, easytouch and gestures but can’t quite find what I am looking for.

This old procedural geometry UNity demo has touch to drag on sphere, might be close to what you need.