RFC-Lite Step, Zone 2 HR & Efficiency Index

RunFormCoach-Lite goes beyond basic pace and heart rate metrics. It is an advanced data field designed to analyze how efficiently your body utilizes energy in real-time. Understand your physiological limits, prevent injuries, and unlock your peak performance with data-driven coaching. [Core Feature 1: Real-Time Efficiency Index (EI)] EI quantifies the distance you cover per single heartbeat, tracking your running form and cardiovascular efficiency in real-time. The algorithm dynamically adjusts for hill grades and wind speed, providing a highly objective measure of your running economy regardless of environmental conditions. [Core Feature 2: Aerobic Decoupling Tracking & Alert] Detect cardiovascular drift during your long runs or marathon training. For the first 20 minutes (15 min stabilization + 5 min collection), the app learns your optimal efficiency and establishes a personalized Baseline. If your efficiency drops by more than 5% from this baseline due to fatigue or dehydration, a Decoupling Alert is triggered. Pro Tip: A dropping decoupling value or an active alert is a physiological signal that your body is depleting its hydration or carbohydrate stores. Use this alert as your precise timing to take an energy gel or drink water, effectively preventing a performance crash. [Additional Features] • Dynamic UI Scale: The gauge automatically scales from -10% to +3% of your baseline, magnifying the critical -5% drop zone for intuitive reading during high-intensity threshold runs. • Target Step Coaching: Calculates your ideal step length based on your height and current pace. Vibration alerts will guide you if your cadence or step deviates from the optimal range. • Strict Zone 2 Tracker: Keeps your base training honest with immediate alerts and penalty timers if your heart rate spikes above your Zone 2 threshold. • Auto-Scroll Display: Cycles through essential metrics including Cadence, Timer, Distance, Average Pace, and Fat Burned every 4 seconds. [ SUPPORT THE DEVELOPER (100% FREE APP) ] RunFormCoach is an ad-free! If this app helps your workouts, please consider supporting the developer with a small favor. My wife runs a heartfelt YouTube channel documenting our daily life and journey raising our son on the autism spectrum. Subscribing to her channel would mean the world to us and keep this app updated! Search on YouTube: @jinnyspectrum (JinnySpectrum) Keywords: Step, Cadence, Zone 2 training, Heart Rate Coach, Running Economy, Aerobic Decoupling, Cardiovascular Drift, Marathon training, Running Efficiency,