Tim Bull is CTO of MixBit, the latest startup of Youtube founder Chad Hurley. Mixbit are on the new wave of Apps that are doing collaborative video - a capability is only possible at the nexus of good mobile networks and great capture/display phones (like iPhone 6, Nexus 6 etc).
Tim shares some valuable lessons about their journey toward Product Market fit and the need to focus on your best market and form-factor to get the job done!
You can get the full transcript and other info at http://www.streethawk.com/blog/2015/05/app-product-market-fit-needs-brutal-focus/