Clothfx - Dynamic Cloth Tearing
Can I export the simulation?
No yet, but will definitely be included in v3.
Are updates free?
Of course! all add-on future updates are free.
My cloth is not behaving how it should when running simulation, what can I do?
Make sure to Enable Dynamics, which emulates the cloth before it is torn, in order to maintain pre-teared mesh. You can quickly pin vertices as well.