Ultimate Fasting

Ultimate Fasting unifies intermittent fasting tracking with spiritual fasting traditions in a single Android app — built solo, privacy-first, with a lifetime purchase option when most competitors are subscription-only.

What's different

Smart Coach with three personalities (Motivating · Scientific · Calm) — a deterministic rule engine, not an LLM. Predictable, on-device, no monthly token costs passed to you. Spiritual fasts taken seriously: astronomically computed Ekadashi dates (with Smartha/Vaishnava observance rule), Orthodox Christian fasting calendar, Ramadan plus Islamic voluntary fasts (Mondays, Thursdays, Ayyam al-Bi?). All free. No paywall on faith. Health Connect integration with multi-source deduplication — reads steps, weight, active calories, and (pending Google approval) nutrition data from MyFitnessPal, Yazio, Cronometer, Samsung Health. We aggregate correctly across sources where competitors silently double-count. Wear OS companion — start, stop, and check your timer from your wrist. Three home-screen widgets — Aurora 4×4 premium clock, compact card, mini tile. 13 languages — English, Bulgarian, German, Spanish, French, Hindi, Japanese, Korean, Dutch, Portuguese, Russian, Chinese, Arabic. 8 visual themes including Serene Mint, Aurora Glow, Cyber Health, Apple Health, Glass AI, Nina Star. Privacy-first: data stays on-device. Optional opt-in cloud sync via Firebase. No telemetry sale, no ads on free tier outside a single banner. Free forever: 16:8, 18:6, 20:4, OMAD and custom protocols · all spiritual fasting calendars · Motivating coach personality · weight tracking with goal setting · achievements · home-screen widgets · 13-language support.

Pro (monthly · yearly · lifetime tiers): Calm + Scientific coach personalities · live calorie verification (pending HC Nutrition approval) · 4-week AI weight prediction with confidence intervals · daily energy balance · Aurora premium widget · advanced insights.

For whom

Intermittent fasters tired of subscription fatigue who want a one-time purchase option Hindu, Orthodox Christian, Buddhist or Muslim practitioners who currently juggle a calendar website + a separate fasting timer Android-first users (especially Wear OS owners — none of the top competitors offer a Wear OS app) Anyone who prefers on-device privacy to cloud-everything