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About this app

Most calorie apps count. Quasar thinks.

Quasar is an adaptive metabolic engine for people serious about body composition. While other apps give you a static target, Quasar recalculates your BMR, TDEE, and macro splits on every weight log. Your plan evolves as your body does.

๐Ÿ”ฅ ๐—™๐—ข๐—จ๐—ฅ ๐—ฆ๐—ฃ๐—˜๐—–๐—œ๐—”๐—Ÿ๐—œ๐—ญ๐—˜๐—— ๐—ง๐—ฅ๐—”๐—œ๐—ก๐—œ๐—ก๐—š ๐— ๐—ข๐——๐—˜๐—ฆ

๐—ง๐—ต๐—ฒ๐—ฟ๐—บ๐—ถ๐—ฐ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ Calculates the exact digestion cost of every meal โ€” Protein (25%), Carbs (8%), Fat (2%) โ€” and credits it back to your daily budget in real time. Built on peer-reviewed TEF research by Westerterp (2004) and Acheson et al.

๐——๐—ฒ๐—ณ๐—ถ๐—ฐ๐—ถ๐˜ ๐—–๐˜†๐—ฐ๐—น๐—ถ๐—ป๐—ด Built on the MATADOR study (Byrne et al., 2017) โ€” cycling deficit and maintenance prevents adaptive thermogenesis and produces greater fat loss than continuous restriction.

๐—Ÿ๐—ผ๐—ฎ๐—ฑ ๐— ๐—ฎ๐—ป๐—ฎ๐—ด๐—ฒ๐—บ๐—ฒ๐—ป๐˜ Pauses your deficit during high-stress periods, switches to maintenance, then resumes exactly where it left off.

๐—œ๐—ป๐—ท๐˜‚๐—ฟ๐˜† ๐—ฅ๐—ฒ๐—ฐ๐—ผ๐˜ƒ๐—ฒ๐—ฟ๐˜† 50 conditions across 11 categories โ€” fractures, sprains, surgeries, infections, chronic conditions, mental health, and more. Each with clinically-informed macro splits, BMR multipliers, and a personalized recovery message.

Includes a ๐—ฆ๐˜๐—ฟ๐—ฎ๐˜๐—ฒ๐—ด๐—ถ๐—ฐ ๐—–๐—ต๐—ฒ๐—ฎ๐˜ ๐——๐—ฎ๐˜†: mark a cheat day, log the excess calories, and Quasar distributes precise daily reductions across your chosen recovery window โ€” to the exact calorie. Next cheat day unlocks only after compensation is complete.

โš”๏ธ ๐—ช๐—”๐—ฅ๐—ฅ๐—œ๐—ข๐—ฅ ๐—ฃ๐—ฅ๐—ข๐—ง๐—ข๐—–๐—ข๐—Ÿ

Hit your daily protein goal and build a streak. Every 5th victory earns a Shield protecting your streak if you miss a day. Progress through a full badge hierarchy โ€” streak, badge score, victories, and shields all tracked in a rank modal.

๐Ÿฑ ๐—œ๐—ก๐—ง๐—˜๐—Ÿ๐—Ÿ๐—œ๐—š๐—˜๐—ก๐—ง ๐— ๐—˜๐—”๐—Ÿ ๐—Ÿ๐—ข๐—š๐—š๐—œ๐—ก๐—š

โ€ข 50+ Indian foods from ICMR-NIN nutritional data โ€ข Open Food Facts API for global packaged food lookup โ€ข Barcode scanner for instant macro breakdown โ€ข Fuzzy search with token scoring and brand-aware ranking โ€ข Local memory layer via AsyncStorage for offline access

๐Ÿง  ๐—•๐—ข๐——๐—ฌ ๐—›๐—”๐—–๐—ž ๐—ฆ๐—ฌ๐—ฆ๐—ง๐—˜๐— 

Psychology-backed craving decoders that identify what your body is actually signaling and redirect impulse before the decision is made.

๐Ÿ“Š ๐—”๐——๐—”๐—ฃ๐—ง๐—œ๐—ฉ๐—˜ ๐—–๐—›๐—˜๐—–๐—ž-๐—œ๐—ก ๐—ฆ๐—ฌ๐—ฆ๐—ง๐—˜๐— 

Log your weight anytime โ€” Quasar instantly recalculates BMR, TDEE, calorie target, and macro splits. Full weight history tracked on a visual timeline.

๐Ÿค– ๐—ก๐—”๐—œ๐—ฉ๐—˜ ๐—•๐—”๐—ฌ๐—˜๐—ฆ ๐——๐—œ๐—˜๐—ง๐—”๐—ฅ๐—ฌ ๐—œ๐—ก๐—ง๐—˜๐—Ÿ๐—Ÿ๐—œ๐—š๐—˜๐—ก๐—–๐—˜

On-device classifier trains on your behavioral history โ€” overshoot patterns across weekends, deficit phases, and high-stress periods. Predicts your daily risk and delivers a targeted message before things go sideways.

๐Ÿ“ก ๐—ข๐—™๐—™๐—Ÿ๐—œ๐—ก๐—˜-๐—™๐—œ๐—ฅ๐—ฆ๐—ง

Firestore offline persistence keeps all data cached locally. Writes queue and sync on reconnect. 60+ curated facts to browse while you wait.

๐Ÿ” No ads. No subscriptions. No data selling. Your data stays in your private Firestore database.
Not just a calorie app. An adaptive engine that learns your body.
Updated on
Aug 17, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info and Health and fitness
  • Data is encrypted in transit
  • You can request that data be deleted

Whatโ€™s new

AI meal logging fixed
Content rating
Everyone
Learn more

App support

About the developer
Prashant Kumar
supportquaser@gmail.com
India