V-Core: Running Intelligence

V-Core Labs

About this app

V-Core – The Intelligence Behind Every Step
Built by a runner for runners. No subscriptions. No ads. One payment, forever.

🧮 CALCULATOR & ANALYSIS
Real-time Pace / Time / Distance / Speed calculation. Import .fit and .tcx files from Strava with auto-fill: HR, Max HR, Cadence, Calories, Elevation Gain. Full Huawei & Garmin support.

⚡ INTERVAL DATA PICKER
Log interval & tempo workouts per rep. Input by Pace or Time — automatic conversion. Scientific VDOT from best rep (≥800m) or average pace (<800m). Training Effect from clean interval heart rate only — not warm-up or cool-down.

📸 PHOTO SHARE
Create branded workout cards for Instagram & Stories. 3 formats (4:5 / 1:1 / 9:16), 3 gradient templates (Purple / Energy / Night). Add photo from gallery, privacy toggles for each stat. Included in backup.

📈 VDOT & PREDICTIONS
Predictions for 5K / 10K / Half / Marathon / 50K / 80K / 100K using Riegel algorithm. VDOT Ranking (Cooper Institute), Age Grade Analysis (USATF MLDR 2025), comparison with World Records. Smart 90-day logic — immune to warm-ups and cool-downs.

💪 TRAINING ZONES & HR
6 zones with Talk Test and precise paces based on VDOT. Heart Rate Zones (Karvonen) — Zone Badge 🔵🟢🟡🟠🔴 on every workout automatically.

⚡ RACE FUELING
Automatic Gel / Water / Electrolyte plan based on distance and pace — for every runner from 5K to Ultra:
Road (≤42km): checkpoints every 20-25'
Ultra (>42km): 3 scientific phases (Gels → Real Food → Protein)

⛰️ GAP & SPLITS
Grade Adjusted Pace (Predict & Analyze mode). Splits Strategy: Neutral / Negative / Positive, intervals 200m / 1km / 5km.

⏱️ STOPWATCH
Accurate stopwatch with Lap recording. Continues even during phone calls.

☀️ WEATHER & CONDITIONS
Impact of temperature, humidity, altitude and wind on race time. Dynamic tips for every athlete level.

⚖️ HEALTH & METABOLISM
BMI, Ideal Weight, BMR — VDOT Impact and Marathon Time Gain based on weight.

📊 V-CORE ANALYTICS
Weekly Mileage (ACWR), VDOT Progress, Pace Trend, Pace vs HR, Time in Zones, Heatmap, TSB Recovery Score, Coach Insights, Weather Impact, Shoe Lab, Goal Race Planner, Pro Coach Report PDF.

📋 ERGOMETRY HISTORY
Log ergometry tests with comparative progress analysis (VO2max, Fat%, Thresholds). Export to PDF for your coach.

🏅 MEDALS — 50+ Digital Badges
Milestones | Personal Records (5K/10K/Half/Marathon/50K/80K/100K) | Ultra Races (Melpomene/Euxideios/Athanaton/Yperatlos/Spartathlon/Feidippideios 485km) | Ultra Milestones | Streaks | Discipline

👟 SHOES & HISTORY
Full shoe management (Brand/Model/Nickname/Color). HR Zone badge, Elevation 🏔️, Session Grouping, filters and search.

🎯 GOALS & STRENGTH
4 goal types, 3 periods, weekly streak 🔥. Strength training with 5 Focus Areas, RPE and calorie tracking. Confetti celebrations for every achievement.

🔧 TECHNICAL
Offline-First • 100% Privacy • Greek & English • Dark/Light Mode • Backup/Restore with photos

"V-Core: The only app that speaks your coach's language."
Tested by Coaches, Run by Athletes. 🏅

What’s new

🏃 What's new in this version
⚡ Interval Data fixes

Fixed a bug when entering reps and distance.
❤️ Better heart rate display

The Avg HR / Max HR fields now adapt to small screens and large system font sizes, so three-digit heart rates are no longer cut off.
🔧 Minor fixes