Looking for a Google forms alternative that can do A/B test

Hi Makers, Looking for a google forms alternative that can give you a simple survey Requirements are 1. Should render well on mobiles 2. Ability to divert traffic to different forms to do some kind of A/B test on the same survey link 3. Custom branding supported.. 4. Tracking on what question /prompt on screen caused abandonment of survey etc Any pointers would be appreciated .. Ram