Delta vs AURA FUEL

Delta tracks your weight and calorie intake and calculates your real TDEE — not a formula estimate, your actual one. 10 days free. One payment for unlimited access. No subscription. Most apps give you a TDEE based on height, weight, age, and activity level. That number is a population average applied to you. It's a starting point, not a measurement. Delta starts there too, but transitions away from it as you log real data. By day 10 your estimate is derived entirely from what you actually eat and how your weight actually moves. The longer you log, the more accurate it gets. Log your weight each morning and your calorie intake each day. Delta averages the last 10 days to filter out noise from water retention and normal fluctuation. It combines your intake with observed weight change to estimate your true maintenance calories, then smooths that estimate over 28 days to avoid overreacting to short-term variance. The result is a daily calorie target adjusted for your goal — cut, maintain, or bulk — grounded in your data rather than population averages. Key features: Daily weight and calorie logging Adaptive TDEE that transitions from formula to fully empirical as you log 28-day smoothing for a stable, actionable number Goal-based calorie targets for cut, maintain, or bulk Apple Health integration — weight and TDEE baseline written automatically Daily reminders for weigh-in and calorie logging Why Delta? Δ is the symbol for change. Your weight change and calorie balance are what actually determine your TDEE. Delta measures both and gives you a number that reflects your reality, not someone else's average.

AURA FUEL helps you turn daily nutrition into clear, practical actions. Set your goals, log meals, review calorie and macro trends, and get coaching that explains what to eat next without pretending missing data is real data. Core features: - Daily Nutrition Brief with calories, macros, and next actions - Meal logging by food photo, nutrition label, or manual entry - Favorite meals for repeat foods and routines - Nutrition trends for calories, protein, carbohydrates, and fat - Apple Health and WHOOP wearable support when connected - Graph-first wearable detail pages for sleep, body readiness, activity load, heart, and activity - AI Coach for nutrition timing, meal ideas, and goal-aware guidance AURA FUEL is designed to be useful even without a wearable. Apple Health and WHOOP are optional, and the app shows lower confidence when wearable data is missing or incomplete. AURA FUEL provides nutrition and fitness guidance for informational purposes only. It is not medical advice, diagnosis, or treatment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ A paid Aura Fuel Pro subscription is required after onboarding to access the app's core features. Monthly and yearly options are shown in the app.