ONLY GAINS — The AI Fitness App That Actually Knows You

What makes it different

Every other app solves half the problem

01 — Exclusive

🧬

Per-Meal Leucine Tracking

Total protein doesn't tell you if you actually built muscle. Leucine per meal — against the 2.5g MPS threshold — does. Zero other apps track this.

2.5g leucine threshold alerts per meal
Completeness scoring (complete / near-complete / incomplete)
Absorption speed and optimal timing for every food

02 — Exclusive

⚕️

Health Context Awareness

Every other app pretends you're a blank slate. ONLY GAINS accounts for your blood type, conditions, and medications — and builds your entire plan around that reality.

Blood type A/B/AB/O with exercise and protein guidance
Health conditions affect program intensity and selection
Medication-aware supplement timing (framed as wellness)

03 — New

📸

Kitchen Scan

Point your camera at your fridge, pantry, or grocery receipt. AI identifies every food item and auto-populates your meal plan with what you actually have.

Photo-to-meal-plan in seconds
Works with fridge, cabinets, counter, receipts
Smart meal assignment based on amino acid timing

04 — New

📊

InBody Import

Every gym hands you a paper printout. Photo it and ONLY GAINS reads weight, body fat, and skeletal muscle mass automatically. No manual entry, ever.

OCR photo import — no manual entry
Direct InBody API sync (auto on every scan)
SMM trend tracking over time

05 — New

⚡

AI Program Generator — Built for You. Only.

Upload your goal physique. Photo your equipment. Fill in your health context. Hit Generate. Claude builds a complete weekly split tailored to every input simultaneously — exercises, sets, reps, rest, and progressive overload notes.

Goal physique upload → AI estimates target BF% and muscle level
Reverse engineer any physique → infer the split that built it
Equipment scan → program scoped to what you actually have
Blood type and health context adjustments inline
Full weekly schedule with exercise details
Regenerate any time with one tap

Data integrations

Reads from everything you own

One connection per source. All your data in one place. Your plan updates automatically.

🍎

Apple Health

Weight, body fat, workouts, HRV, sleep, resting heart rate, active calories — all synced automatically.

iOS nativeReal-timeWrite-back

📊

InBody Direct API

Auto-sync every scan from your gym's InBody device. Skeletal muscle mass tracked over time.

LookinBody WebAuto-pushSMM tracking

⌚

Terra API — 150+ Devices

Garmin, Oura, Fitbit, Whoop, Withings, Samsung Health and 140+ more through one unified integration.

OuraGarminWhoopFitbit+146

🤖

Claude AI (Anthropic)

All AI features — kitchen scanning, physique analysis, program generation, supplement timing — powered by Claude Sonnet via a secure backend proxy.

VisionBackend-proxiedPrivacy-safe

🧪

Coming: Lab Work

Import blood work results — testosterone, cortisol, vitamin D, iron — for deeper personalization.

Q3 2026

🏋️

Coming: Gym Equipment Sync

Link directly to gym management software so your available equipment updates when you travel or switch gyms.

Q4 2026

Competitive analysis

How we stack up

Feature

ONLY GAINS

MacroFactor

Zing Coach

Arc AI

Cronometer

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${feat}

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`).join('')}

ONLYGAINS