Training that adapts to your reality
Weather. Terrain. Fatigue. Recovery. Your training plan should understand them all.
Intelligent by design
Every feature is built to help you train smarter, recover better, and perform at your peak.
Weather-Aware Engine
Training plans that adapt to real-time conditions. Heat, humidity, wind, and sun exposure all factor into your prescribed effort.
Scientific Load Tracking
TRIMP-based load management with acute-to-chronic workload ratios. See exactly how your fitness and fatigue are trending.
Precision Elevation
Grade-adjusted pace using digital elevation models. Know your true effort on any terrain, not just what your GPS guessed.
Nutrition Intelligence
Fueling recommendations based on workout intensity and duration. Personalized carb and hydration guidance for every session.
Privacy-First Design
Your training data stays yours. No selling to third parties, no ads, no compromises. You control your information.
Performance-First
Fast, responsive, and reliable. No bloated features or slow interfaces. Just the tools you need to train smarter.
See it in action
Interactive demos that show how EinsteinFit adapts your training to real-world conditions.
Conditions Intelligence
See how conditions affect your workout
intensity adjustment
Mild heat. Minor pace adjustment recommended.
For demonstration purposes only. Not medical or coaching advice.
Real-Time Adaptation
How your workout responds to changing conditions
3-Provider Weather Reliability
Real-time triangulation from multiple sources
EinsteinFit triangulates weather from multiple providers, weighting by reliability and latency to deliver the most accurate conditions for your training adjustments.
Weather-Adjusted Calories
See how conditions affect your energy expenditure
Estimates based on a 160 lb runner. Actual values vary by individual metabolism, fitness level, and terrain.
Built with rigor
Training intelligence grounded in science, refined through testing, and proven in practice.
Scientific Foundation
Based on peer-reviewed exercise physiology research
Real-Time Data
Environmental conditions updated throughout the day
Continuous Improvement
Algorithms refined based on real-world outcomes
“Built with guarantees. Tested with rigor. Shipping excellence.”
Frequently Asked Questions
Everything you need to know about training with EinsteinFit.
EinsteinFit pulls real-time weather data from multiple providers and adjusts your workout intensity based on temperature, humidity, wind, and sun exposure. Hot and humid conditions mean slower paces; cool and dry conditions let you push harder.
TRIMP (Training Impulse) is a scientifically validated method for quantifying training load based on duration and intensity. We track your acute (7-day) and chronic (28-day) training loads to help you optimize fitness gains while avoiding overtraining.
We use Digital Elevation Models (DEM) to calculate true elevation gain, not just what your GPS estimates. This means more accurate grade-adjusted pace calculations, especially on hilly terrain where GPS can be off by 30% or more.
Absolutely. We don't sell your data to third parties, we don't show ads, and you control what you share. Your training data stays yours. You can export or delete your data at any time.
Currently we focus on running and cycling, with plans to expand to swimming, hiking, and other endurance sports. Our weather and load tracking algorithms are sport-specific for maximum accuracy.
EinsteinFit offers a free tier with core features. Premium features like advanced analytics, historical weather data, and personalized nutrition guidance are available with a subscription. See our pricing page for details.
Still have questions? Contact support
Ready to train smarter?
Join athletes who are done guessing and ready for training intelligence that adapts to reality.