✦ About usBuilt because the app
Built because the app
I wanted didn't exist.
I tried every fitness app out there. None of them knew how I trained. KarnaFit does.
The problem
Every app felt built for someone else.
I train constantly. I've downloaded every fitness app. They all hand you the same generic plan, let you log reps, and that's it. No one was looking at my data. No one flagged that my push was way ahead of my pull, or that I'd been stalling on the same weights for weeks.
Kärna Coach™
An AI coach that works between your sessions.
After every week of training, Kärna Coach™ analyses your data, detecting plateaus, muscle imbalances, and gaps in cardio or flexibility then walks you through fixes one by one. Accept what makes sense, skip what doesn't. You stay in control.
What's inside
Weekly AI insights on your real training data
Push/pull balance and plateau detection
Muscle heatmap and load tracking
Generate workouts from a simple text prompt
Log sessions with RPE, feel, and pain flags
Coach walks you through changes — you decide
What we stand for
🎯
Your metrics, your plan
Suggestions built from your own data, not a template built for someone else.
🔍
Progress that means something
Not just charts. Real explanations of what's working and what to fix.
✔️
You're still the coach
AI suggests every change. You accept or skip. Always your call.
Ready to transform your workouts?
Join thousands of fitness enthusiasts building better routines with Kärna.
Create Your First Template