Don't just train.
Train with purpose.
While other apps create simple workouts, phase.fitness generates complete, periodized training programs based on science, tailored to your goals, timeline, and progress.
Not another workout tracker. phase.fitness is your training intelligence layer—create programs here, track workouts in Hevy (or your favorite app soon). Everything stays in sync.
The Problem with Random Workouts
Most fitness apps give you isolated workouts. You train hard, but without a structured plan, you:
- Hit plateaus and stop making progress
- Overtrain or undertrain without knowing it
- Never peak when it matters most
phase.fitness Builds Programs, Not Workouts
Based on proven periodization principles, phase.fitness creates complete training programs that:
- Systematically build toward your specific goal
- Balance stress and recovery intelligently
- Time your peak performance perfectly
Built on Science, Powered by AI
phase.fitness combines evidence-based periodization with AI to create personalized programs
Goal-Driven Programs
Preparing for a race? Building strength? Losing weight? Our AI designs complete programs around your specific objective and timeline.
Periodized Phases
Each program is divided into strategic phases: base building, intensification, peak, and recovery—all timed for optimal adaptation.
Adaptive Intelligence
Your program evolves with you. Log your performance, and phase.fitness adjusts future phases based on your progress and recovery.
A structured plan beats motivation
Periodization is the intentional sequencing of training variables—volume, intensity, frequency, and specificity—so your body adapts while managing fatigue.
How phase.fitness Works
From goal to achievement in four simple steps
Set Your Goal
Tell us your objective: run a marathon, hit a PR, build muscle, or lose weight.
Get Your Program
AI generates a complete, periodized training plan with phases optimized for your timeline.
Train & Track
Follow your daily workouts, log performance, and track progress through each phase.
Peak & Achieve
Arrive at your goal date in peak condition, ready to perform at your best.
Works with your favorite apps
Seamlessly integrate with your existing workout tracking tools — strength, cardio, and wearables
Hevy
LiveTwo-way sync for strength routines. Create programs here, track in Hevy — everything stays in sync.
- Bidirectional sync
- Conflict resolution
Strava
LiveImport your training history from Strava. The AI analyzes your activities to build a comprehensive athlete profile.
- Activity import
- AI athlete profiling
Intervals.icu
LivePush cardio workouts to Intervals.icu with structured intervals and HR zones. Gateway to all major sports watches.
- Cardio push sync
- Wellness data import
Export
LiveExport complete programs and workouts in multiple formats. Share with coaches or use in any app.
- Multiple formats
- Full program export
From AI to your wrist
phase.fitness creates AI-powered workouts. Through Intervals.icu, your cardio routines reach Garmin, Suunto, COROS, Apple Watch, and more.
Device sync powered by Intervals.icu — a powerful open training platform that connects to all major sports watches and bike computers.
Your training history becomes your advantage
phase.fitness uses advanced AI memory to analyze all your past workouts and create programs specifically tailored to your unique training patterns, strengths, and recovery needs.
How phase.fitness AI Creates Your Workouts
Our AI doesn't just generate random workouts. It synthesizes multiple data sources to create personalized training plans that evolve with you—combining exercise science, your strength data, training history, and real-time feedback into intelligent programming.
Every workout you complete feeds back into the AI, creating a feedback loop that makes each subsequent program more accurate and effective.
The AI leverages our curated knowledge base of exercise science, periodization principles, and proven training methodologies.
Simple, transparent pricing
Start free, upgrade when you're ready for extended AI-powered training
Free
- Up to 3 programs
- Up to 10 routines
- 5 AI generations/month
- Exercise library
PRO Monthly
- Extended programs & routines
- Extended AI credits
- Hevy sync integration
- Advanced analytics & phase analysis
PRO Annual
$5.83/month - Save $13.98 per year
- Extended programs & routines
- Extended AI credits
- Hevy sync integration
- Advanced analytics & phase analysis
💳 Secure payment powered by Stripe
Cancel anytime from your account settings
Ready to train with purpose?
Join athletes and fitness enthusiasts who are achieving their goals with science-based training programs.
Create Your Program