I'm confused...
They claim an app that can run on a FeaturePhone, but every FeaturePhone I've ever heard of or used couldn't run apps -- most don't have any appreciable internal storeage in which to keep it, they don't have an OS complex enough to run it, and not enough computational oomf to run it even if the first two issues were somehow dealt with.
So my question is this: how can you run an app on a _FeaturePhone_ that is, by very definition, incapable of running an app at all?