The Fitness App That
Adapts to You
Track nutrition with AI scanning, build muscle with personalized training programs, and reach your goals with our intelligent macro adjustment algorithm. Your body changes—your app should too.
Everything You Need in One App
Stop juggling multiple apps. Atom Fitness combines nutrition tracking, workout logging, goal planning, and progress analytics into one seamless experience.
Nutrition Tracking
Log meals with AI photo scanning, barcode scanning, or search from 500K+ foods. Track macros, set goals, and watch your eating habits transform.
Learn more →Workout Training
Build custom workouts, follow AI-generated training splits, track every set, and celebrate PRs. Spotify integration keeps you pumped.
Learn more →Smart Goal Setting
Set weight goals and let our algorithm automatically adjust your macros weekly based on your actual progress. Science-backed, personalized nutrition.
Learn more →Log Meals in Seconds, Not Minutes
Whether you're scanning a barcode, snapping a photo of your lunch, or searching our database of 500,000+ foods, logging your nutrition has never been faster. Track calories, protein, carbs, fat, fiber, and more.
AI Food Scanner
PremiumPoint your camera at any meal and let AI identify the food and estimate macros.
- •Works with home-cooked meals and restaurant food
- •Identifies multiple items on a plate
- •Adjust portions after scanning
- •Learns your common meals over time
Barcode Scanner
PremiumScan any packaged food to instantly pull nutrition data from our database.
- •Access to 500,000+ products via FatSecret
- •Open Food Facts fallback for additional products
- •Works offline for previously scanned items
- •Submit new products to help the community
Nutrition Label Scanner
PremiumPhotograph nutrition facts labels for manual verification and precise tracking.
- •OCR technology reads label text
- •Verify AI estimates against actual labels
- •Great for new or obscure products
Food Search
Search our comprehensive database or create custom foods and recipes.
- •Restaurant menu items included
- •Save favorites for quick access
- •Build custom recipes with multiple ingredients
- •View recent meals for quick re-logging
Meal Pattern Predictions
AI learns your eating habits and suggests foods at the right time.
- •Predicts breakfast, lunch, dinner foods
- •One-tap logging for frequent meals
- •Gets smarter the more you log
- •Time-based suggestions throughout the day
Recipe Builder
Create recipes from ingredients with accurate combined nutrition.
- •Add ingredients via search, barcode, or library
- •Set servings for per-portion macros
- •Save and reuse unlimited recipes
- •Edit recipes anytime
Copy & Paste Meals
Duplicate meals between days with the clipboard feature.
- •Copy single meals or entire days
- •Paste to any future date
- •Great for meal prep tracking
- •7-day clipboard history
Water Tracking
Stay hydrated with quick water logging and daily goals.
- •One-tap logging from Quick Add
- •Customizable glass sizes
- •Daily goal tracking
- •Dashboard widget for progress
What You'll Track
Quick Logging
AI Split Creator
Built-in Training Tools
Train Smarter with AI-Powered Programs
Whether you want a custom program built by AI or prefer to create your own workouts, our training system adapts to how you like to train. Track every set, celebrate PRs, and watch your strength grow over time.
AI Split Creator
PremiumGet a personalized training program in seconds based on your goals and equipment.
- •Considers your experience level and session duration
- •Accounts for injuries and limitations
- •Optimizes exercise selection for your equipment
- •Includes proper rest day placement
Workout Builder
Create custom workouts with exercises from our library or add your own.
- •Hundreds of exercises with instructions
- •Create custom exercises with photos/videos
- •Reorder exercises with drag-and-drop
- •Set default sets, reps, and rest times
Progress Tracking
Every set is logged and analyzed to show your improvement over time.
- •Automatic PR detection and celebration
- •Volume trends by muscle group
- •Weight progression charts
- •Workout performance scores
Progressive Overload
Smart weight recommendations based on your training history.
- •Lightbulb icon appears when ready to increase
- •Analyzes rep completion across sessions
- •Confidence levels (High/Medium/Low)
- •Suggests increase, maintain, or consolidate
Live Activity & Dynamic Island
See your workout on the lock screen and Dynamic Island (iOS 16+).
- •Current exercise and set progress
- •Rest timer countdown
- •Tap to jump back into workout
- •Works even when phone is locked
Spotify Integration
Connect your Spotify account to auto-play playlists when workouts start.
- •Link playlists to specific workouts
- •Music starts automatically
- •Controls in the workout screen
Your Macros Adapt to Your Progress
Set a weight goal and let our intelligent algorithm handle the rest. Every week, your macros automatically adjust based on your actual progress—not generic formulas. The app learns YOUR body.
Weekly Check-Ins
Weigh in once a week and watch the magic happen.
- •Flexible 2-day grace period around your check-in day
- •Compare actual vs. target progress
- •See exactly how your macros will change
- •Confirm or skip the adjustment
Smart Macro Adjustments
PremiumOur algorithm uses the Mifflin-St Jeor formula with your real data.
- •Losing too fast? Calories increase to preserve muscle
- •Losing too slow? Calories decrease to get back on track
- •Maximum ±10% adjustment per week for safety
- •Protein prioritized to protect lean mass
Built-in Safety Features
We protect your health with intelligent limits and warnings.
- •Minimum calorie floors (1,200 women / 1,500 men)
- •Large weight swing detection (>5 lbs/week)
- •Plateau alerts when progress stalls
- •Confidence scoring based on data quality
Adherence Tracking
See how consistently you're hitting your targets.
- •Calorie adherence (days within ±10% of target)
- •Protein adherence for muscle goals
- •Check-in completion rate
- •Overall consistency score
Plan Insights
PremiumDeep analytics on your metabolism and plan performance.
- •Track your TDEE trend over time
- •See metabolic status: Stable, Adapting, or Still Learning
- •Full adjustment history with reasons
- •Reliability scoring for data quality
Progress Photos
Document your transformation with visual progress tracking.
- •Take photos at each check-in
- •Side-by-side comparisons
- •Private and secure storage
- •See changes you might not notice day-to-day
Smart Adjustments
Learn How It Works
Deep dive into our comprehensive guides. Understand the science behind your macros, master the training features, and get the most out of your fitness journey.
Getting Started
Set up your account, learn about free vs premium features, and start your fitness journey.
Read guide →Goal Tracking
Complete guide to goal setting, check-ins, macro adjustments, and adherence monitoring.
Read guide →Training Guide
Master the workout builder, AI split creator, and progress tracking features.
Read guide →Active Workout
Log sets, use smart features, rest timers, plate calculator, and Live Activity.
Read guide →Meals & Logging
All the ways to log food — search, scanning, AI analysis, recipes, and more.
Read guide →Progressive Overload
Understand how intelligent weight recommendations help you progress safely.
Read guide →Available in 10 Languages
Atom Fitness speaks your language. Full localization for the app interface, exercise instructions, and notifications.
Try Premium Free for 7 Days
Unlock AI food scanning, smart macro adjustments, training analytics, and more. Experience everything Premium has to offer with zero commitment.
Simple, Honest Pricing
Start free with core features. Upgrade to Premium for AI scanning, dynamic macros, and advanced analytics.
Free
Core features to get started
- Food search (500K+ foods)
- Full macro tracking (calories, protein, carbs, fat)
- Create up to 3 workouts
- Create up to 3 recipes
- Up to 5 progress photos
- Weight logging & history
- Full exercise library
- Manual food entry
- Copy & paste meals
Premium
Full power of Atom Fitness
Billed annually at $59.99/year
7-day free trial included
- AI Food Scanner
Snap a photo, get instant macro estimates
- Barcode Scanner
Scan 500,000+ products instantly
- Label Scanner
Photograph nutrition labels
- Dynamic Macros
Weekly auto-adjustments based on progress
- AI Split Creator
Personalized training programs in seconds
- Progressive Overload
Smart weight recommendations
- Live Activity
Workout on lock screen & Dynamic Island
- Training Analytics
Volume trends, muscle balance, PRs
- Unlimited Workouts
Create as many as you need
- Unlimited Recipes
Save all your favorite meals
- Unlimited Photos
Document your full journey
- 22 Dashboard Widgets
Fully customizable dashboard
- Data Export
Download all your fitness data
Ready to Transform Your Fitness Journey?
Join thousands who are already tracking smarter, training harder, and reaching their goals with Atom Fitness.