Move with purpose.
See every meter.
Soreyn is a precision outdoor activity tracker for walking, running, cycling, and hiking. From speed-shaded route gradients and metabolic energy modeling to frame-by-frame workout replay, experience your movement with refined clarity on iPhone and Apple Watch.
WORKOUT REPLAY ENGINE
Relive every climb, surge, and split.
Workouts are not just static summaries—they are dynamic journeys of effort and recovery. Soreyn’s Workout Replay allows you to inspect your past activities second by second with synchronized biometric playback.
Split-Second Inspection
Scrub forwards and backwards across your entire trail. Trace how your rhythm, pace, and heart rate responded to every slope change and headwind.
Topographic Correlation
Identify the exact incline grades that pushed your cardiovascular effort into threshold zones, with synchronized elevation gain curves.
Historical Progress Replay
Open any recorded activity from weeks or months ago and experience the complete second-by-second breakdown directly from local storage.
PHYSIOLOGICAL MODELING
Energy, rhythm, and terrain physics.
Soreyn does not rely on simplistic multiplier formulas. Telemetry is calculated from continuous velocity vectors, grade gradients, and Apple Watch sensor metrics.
Caloric & Active Energy Calculation
Soreyn models active energy burn (kcal) by combining moving velocity, topographic grade inclination, user body weight, and heart-rate telemetry. Climbing a steep mountain trail requires fundamentally different metabolic work than flat tarmac, and your energy metrics reflect that reality.
Step Counting & Cadence Tracking
Integrated pedometer analysis tracks cumulative step counts, steps per minute (SPM), and rhythm consistency for walking, running, and hiking. Review your cadence shifts across technical terrain to refine your efficiency and prevent fatigue.
Speed & Elevation Shaded Routes
Your GPS route is rendered using dynamic color gradients. Fast downhill descents, hard uphill pushes, and steady endurance miles stand out visually on the trail map, giving you an immediate visual story of how you paced the workout.
Intelligent Auto-Pause & Noise Filtering
Stoplights, street crossings, and trail gate pauses are handled automatically. Our multi-stage location filtering eliminates GPS jitter while preserving clean moving-time telemetry and authentic split pace.
ORGANIZATION & ANALYTICS
One calm home for every outdoor discipline.
Whether walking your neighborhood loop, clocking a half-marathon, riding weekend gravel, or hiking alpine switchbacks—Soreyn organizes your training with zero clutter.
Walking
Pedometer focus, daily step counts, elevation curves, and relaxed route tracking.
Running
Live split pacing, cadence analysis, cardiovascular heart zones, and speed gradients.
Cycling
Instant velocity, total distance, elevation ascent profile, and moving time telemetry.
Hiking
Cumulative topographic gain, trail distance, step tracking, and off-grid GPS mapping.
LOCAL-FIRST BY DESIGN
Your health data belongs on your device.
Soreyn is engineered with privacy as a foundational principle. Your GPS coordinates, workout tracks, biometric heart rate samples, and health logs remain strictly on your iPhone. We never sell your data, never monetize your routes, and never upload your personal records to third-party brokers.
Workouts, heart rate, and GPS coordinates remain strictly on-device.
Permanently erase all records and your account directly from app settings.