The tools you need to build a body that supports self-defense and fight
readiness. Curated by experts, priced for everyone.
📊
Recovery Analytics Panel
Built from 30,000+ hours of martial arts training: combine soreness heatmaps, heart
rate zones, and rest-day comparisons to spot overtraining before it lands. HealthKit
refresh occurs instantly when you grant access; manual entries continue without
disruption.
❤️
Heart Rate Insights
Track heart rate with HealthKit or manual entry. View training intensity zones,
compare training vs rest days, analyze 7-90 day trends, and export detailed PDF/CSV
reports. No Apple Watch? No problem—manual entry works seamlessly.
✏️
Manual Heart Rate Entry
No Apple Watch? No problem. Manual average and max entries drive the same charts so
CrossFitters, lifters, and martial artists still see intensity trends without buying
extra hardware.
🔒
Privacy-First Health Permissions
No accounts, no servers, no data brokers. HealthKit access remains optional and
read-only, with per-data-type controls and instant status banners.
🧍
Interactive Body Map
Tap any of the 40+ front and back muscle groups to track soreness with color-coded
intensity levels, haptic feedback, and bilateral precision.
📅
Visual Calendar
Track training sessions and soreness over time with a beautiful calendar interface.
See patterns emerge with color-coded indicators for both workouts and recovery.
📈
Detailed Analytics
Visualize your training and recovery with stunning charts: training sessions timeline,
heart rate trends, overall soreness patterns, category breakdowns, and muscle-specific
timelines.
🏠
Smart Dashboard
Quick-start buttons, weekly summaries, personalized time-based greetings, and
clickable achievement badges. See total training hours, recovery metrics, and most
affected muscle groups instantly.
⭐
Favorite Exercises
Mark your go-to exercises as favorites for quick access. Filter your exercise library
to show only your favorites with a single tap.
📋
Custom Exercise Lists
Create personalized workout lists with custom names and notes. Generate lists based
on muscle groups, equipment, and difficulty—or manually select exercises. Rearrange your lists
to prioritize them for any workout or future workouts. Perfect
for building routines.
🎲
Random Workout Generator
Generate random exercise lists to keep training fresh. Set filters for muscle groups
and equipment, choose the number of exercises, and let the app create variety for
you.
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In-Log Exercise Tracking
Add exercises directly to your training logs with sets, reps, and weight. Search,
filter, and manage your workout sessions without switching apps.
🌍
24 Languages Supported
Every UI string, help doc, and accessibility hint translated by humans—not machine
text. Serve Core JKD Germany, Brazil’s BJJ gyms, Thailand’s Muay Thai camps, and
beyond without English fallbacks.
🔐
Privacy First
Core JKD values “function over form.” We took the same stance: no analytics SDKs, no
ads, no pushy logins. Your data lives in Core Data (Apple's secure on-device database)—meaning
it stays locked on your phone, not our servers, with automatic daily snapshots you control.
🎨
Beautiful Design
Native iOS design with full Dark Mode support, haptic feedback, and VoiceOver
accessibility. Optimized for all iPhone and iPad sizes.