There are as yet no custom smart apps approved to run locally. The only smart app that can run locally is smartlights and a small part of smart home monitor.
Continuing the discussion from What's the deal with Nest? :
Correct.
I was answering this question below in the global sense. i.e., There will always be the possibility of various benefits available to Official Device Handlers and SmartApps that are not available to un-certified Community Developed ones. At the moment, the local processing benefit is inapplicable to Nest in either case.
I’m not sure ST has guaranteed that community developed SmartApps/Device Types will be included in local processing right after certification. Yes, it may be included down the road, and this is not yet clear on how or what the process is to enable community developed stuffs to run locally.