I love the concept. Have you guys considered selling dumb phones? If done right I think you could make them a cool status item, or build a brand around the general idea of reverting to less addictive tech.
basically you sign up, we mail you a dumb phone with instructions for putting your smartphone sim card in, and you mail us back your smart phone. after 30 days we send it back with some swag saying you did it and some instructions for restarting your digital life with good habits post-detox.
would love to get around to it, but channeling steve jobs for now - "focus means saying no to a hundred other good ideas"