Summary: Fitness tracking is nuanced and even slightly controversial: Do users want to monitor and track (quantify) their behavior and activity? More importantly, does it work to increase motivation and reach health and wellness goals? Our research over the past 5 years has shown some clear user experience needs that most apps and fitness trackers completely miss in their UX strategy. We have been conducting studies in gamification, social UX, competitor feature adoption and efficacy (motivational success) with far-reaching implications for mobile wellness and health apps. Here we cover 7 research-based heuristic rules of thumb for designing mobile "e-health" experiences.