Traditional calorie trackers are failing dieters. While giants like MyFitnessPal tell you how much you ate, they completely ignore how full you feel. This is the gap where dieters lose the battle.
The Market Gap: The weight loss industry is a $78B market, yet hunger remains the primary cause of failure. Specifically, vegetarian dieters struggle with macro-imbalances—low protein and fiber—that lead to uncontrollable binges, even when eating at maintenance calories.
The Validation: This isn't theory. A viral thread in r/loseit (1.2M members) recently exploded with engagement when a user admitted to being desperate for a binge despite eating 1,900 calories. The consensus? Users are sick of "hunger torture" and are desperate for science-backed ways to manage satiety.
The Solution & Unique Angle: Enter SatietyCoach. It's an AI-powered nutrition coach that scores meals on a proprietary Satiety Index (protein + fiber + volume / calories).
Key features include:
AI Meal Swaps: Automatically suggests alternatives (e.g., "Swap those tortillas for lentil soup to stay full 2x longer").
Hunger SOS: A quick-access toolkit for binge prevention.
Satiety Prediction: Prevents the "hunger crash" before it hits.
The Opportunity: This is a perfect project for a solo developer or small team:
Unclaimed Niche: No major competitor currently focuses on satiety scoring as a core metric.
High Retention: Solves a daily, visceral pain point, leading to higher D30 retention than standard diet apps.
Lean Build: Can be launched as an MVP using React Native and GPT-4o for recipe analysis.
This is a validated business case waiting for a builder to execute
Want to build this? The full Product Requirement Document includes market analysis, user stories, a go-to-market strategy, and more.