I hadn't heard of that feature. Sounds like a pocket BLU app. I agree - if you have to use your phone to get it, it's not the same thing as having a movie viewing experience...
I didn't notice any freezing or skipping when watching the movie. Of course, when the Gru-Control feature is turned on, there are moments where the picture gets frozen, sped up or rewound, but that's due to Vector or the Minions messing around...