V-Core: Running Intelligence

V-Core Labs

About this app

V-Core – The Intelligence Behind Every Stride

Built by a coach and runner, for runners. No subscriptions, no ads: pay once, keep it forever. Your data stays on your device.

🔄 AUTOMATIC SYNC
Sync via Health Connect (Garmin, Samsung, Coros, Huawei via Health Sync and more) or import .fit/.tcx files. Heart rate, cadence, calories and elevation fill in automatically, even when your watch sends the distance later.

🏃 V-SCORE & PREDICTIONS
V-Score, a race-fitness index built on published scientific methodology. Race predictions from 5K to 100K, suggested training paces, Fitness Age and Age Grade (USATF).

📅 SMART TRAINING PLANS
Plans from 5K to marathon, on the days you choose, with strength sessions, taper and race week. They adapt to low weekly volume and to your return after a break or injury. In kilometers or miles, with PDF export.

💪 SEILER ZONES & 80/20
A 3-zone model (Easy 🟢, Grey 🟡, Hard 🔴) that follows your own max heart rate. On easy runs, the Coach’s Verdict tells you whether you kept to the 80/20 rule.

📈 AEROBIC EFFICIENCY (EF)
Watch your aerobic engine improve on easy runs, with a clear explanation of what it measures.

⛰️ TRAIL & ELEVATION
V-Score for trail runs using the ITRA km-effort method. Weekly elevation gain, Elevation Context, a GAP calculator and split strategy per 200 m / 1 km / 5 km.

⚡ INTERVALS
Log intervals rep by rep, with V-Score and Training Effect calculated from the work reps alone.

📊 V-CORE ANALYTICS
Weekly volume, load change (ACWR), V-Score progress, pace, heart rate, time in zones, TSB Recovery Score, weather impact, Shoe Lab.

📄 PDF & PHOTO SHARE
Pro Coach Reports (7/28/84 days), training plans and lab tests as PDF, in English or Greek. Workout cards for Instagram (4:5 / 1:1 / 9:16) with your photo and 3 templates.

🍯 RACE FUELING
An automatic gel, water and electrolyte plan based on distance and pace: checkpoints for road races, 3 phases for ultras.

🏅 MEDALS, SHOES & GOALS
50+ digital badges, full shoe management, strength training with 5 focus areas, goals with weekly streaks.

🔒 PRIVACY
Offline-first. No account: nothing leaves your device. Backup/Restore, English & Greek, Dark/Light Mode.

“V-Core: The only app that speaks your coach’s language.”

What’s new

• Prep races: up to 3 races (5K, 10K, half marathon) in your plan, with a mini taper before, easy days after and a heads-up when one is close to your main race.
• Resting heart rate from Health Connect (optional, in Profile).
• Training Effect: same calculation for every type.
• Shoes: runs and time count correctly after renaming.
• The date picker follows the app language; History search ignores accents.
• Small fixes in Edit workout and the Goal Race Planner.