AI-Powered Fitness Intelligence

A New Lens on
Strength Training

Science-backed strength training intelligence. Track workouts, analyze progress, and get AI-powered insights that adapt to your unique training journey.

1000+
Exercises
Offline
First Logging
Private
By Default

Built for Serious Athletes

Enterprise-grade features designed to help you achieve your fitness goals faster

Advanced Analytics

Visualize your progress with comprehensive charts tracking volume, strength gains, and muscle group development over time.

AI-Powered Coaching

Get personalized workout recommendations and adaptive programs that evolve based on your performance and recovery.

Lightning Fast Logging

Log complete workouts in under 2 minutes with smart auto-fill, progressive overload suggestions, and intuitive UI.

Offline-First Design

Never lose data. Works perfectly offline and syncs seamlessly when you're back online. Your data is always safe.

Smart Rest Timers

Automatic rest timers between sets with customizable durations. Stay focused and optimize your workout efficiency.

Enterprise Security

Bank-level encryption, GDPR compliant, and built on enterprise-grade infrastructure. Your data privacy is our priority.

Science-Backed Analytics

Real-time insights powered by exercise science. Track every metric that matters for strength and muscle development.

⚠️ All insights are informational and not medical advice. AI suggestions adapt to your training logs—always train within safe limits and consult professionals for personalized guidance.

Our Methodology

1RM Estimation
Epley formula: weight × (1 + reps/30). Estimates only—not a max test.
Training Volume
Sets × reps × load per muscle group. Tracks weekly totals for optimal growth.
RPE Tracking
Rate of Perceived Exertion (1-10 scale). Subjective intensity for fatigue management.
Progress Logic
Rolling averages detect trends. Adaptive algorithms suggest deloads when needed.

Track Your
Strength Progression

Visualize your 1RM progression over time with detailed charts. See exactly how much stronger you're getting with every workout session.

  • Estimated 1RM Tracking
    Automatic calculation of your one-rep max for every exercise
  • Interactive Charts
    Tap any data point to see detailed workout information
  • Progress Percentage
    See your strength gains as a percentage increase
FitnessTracker Strength Progress Chart showing 81.6% increase in Barbell Back Squat from 160 to 267 lbs over 21 sessions
FitnessTracker AI Coach Insights showing 82 recent PRs, strong volume averaging 2,918 lbs per session, and recovery recommendations

AI-Powered
Coach Insights

Get personalized feedback on your training consistency, volume, and recovery. Our AI analyzes your patterns and provides actionable recommendations.

  • Consistency Tracking
    Visual calendar showing your workout adherence
  • PR Celebrations
    Automatic detection and celebration of personal records
  • Smart Recommendations
    Context-aware advice on volume, recovery, and training balance

Volume Tracking
by Muscle Group

Monitor training volume per muscle group with weekly trends. Ensure balanced development and optimal growth stimulus across all major muscle groups.

  • Weekly Volume Trends
    Track volume progression for each muscle group over time
  • Muscle Group Selection
    Filter by specific muscles to see detailed volume data
  • Percentage Breakdown
    See what percentage of total volume each muscle receives
Back Volume Trend showing weekly volume progression from 1,000 lbs (1% of total) with muscle group tracking
RPE Intensity Distribution showing 140 total sets: 67% moderate (RPE 6-7), 29% max effort (RPE 9-10), with training zone recommendations

RPE Intensity
Distribution

Optimize your training intensity with RPE zone breakdown. Ensure you're training in the right zones for your goals with detailed intensity analysis.

  • Zone Breakdown
    See percentage of sets in each RPE zone (Easy to Max Effort)
  • Training Recommendations
    Get optimal intensity targets based on your goals
  • Balance Insights
    Maintain good intensity balance for sustainable progress

Your Complete Training Hub

Everything you need to track, analyze, and optimize your fitness journey in one beautiful app

FitnessTracker Programs List showing 3 active programs: Leg program, Upper Body Program, and upper body program with Start buttons

Smart Program
Management

Track multiple programs simultaneously with adherence metrics, consistency trends, and AI-generated insights to keep you on track.

  • Adherence Tracking
    Monitor your consistency with visual trends and weekly goals
  • Multiple Programs
    Run multiple training programs simultaneously
  • Quick Start
    One-tap access to start any workout from your programs

Ready to Transform Your Training?

Join thousands of athletes using StrengthLens to reach their goals faster

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