Now with AI post-session analysis

Train with
purpose.

Arete Balance is the AI-powered coaching platform for endurance athletes who pursue excellence — not just in sport, but in everything they do.

+
Training sessions analyzed
6+
Integrated data sources
1st
AI coach that truly listens
ἀρετή
aretḗ
Ancient Greek · noun

In ancient Greek philosophy, arete meant the fullest expression of any thing's potential — the excellence inherent in living and acting at your very best. For athletes, it wasn't just about winning. It was about the daily practice of becoming.

Excellence through balance
Aristotle saw arete not as an extreme, but as the perfect middle point — enough training load, enough recovery, enough fuel. Balance isn't a compromise. It's the condition for peak performance.
Virtue in motion
The Greeks didn't separate physical and mental excellence. A trained body sharpened the mind; a disciplined mind unlocked the body. Endurance athletes live this truth every day.
Practice, not perfection
Arete was never a destination — it was the act of striving. Every session logged, every meal tracked, every race started is another step in that practice. That's what Arete Balance is built for.

Platform

Everything your training demands

From AI-powered coaching to granular nutrition data — Arete Balance brings together every tool a serious endurance athlete needs.

AI Coaching Agent

Personalized guidance powered by Claude. Your coach remembers every session, adapts to your load, and delivers post-workout analysis that actually changes how you train.

Powered by Claude

Nutrition Tracking

Photo recognition, barcode scanning, and Czech food database integration. Log meals in seconds — including fuel and hydration during workouts.

Multi-source DB

Training Management

Sync with Intervals.icu, log sessions, and track readiness. Every workout feeds into a clear picture of where you are and where you're heading.

Intervals.icu sync

Analytics Dashboard

Performance Management Chart with CTL, ATL, and TSB. Weekly volume by discipline. Training plan compliance — visualized with precision.

PMC & CTL/ATL/TSB

Lab Test Results

Track CPET, body composition, lactate threshold, and blood tests in one place. See how your physiology evolves across training phases.

Full biomarker suite

Smart Pantry

Supplier catalog integration with barcode and search quick-add. The platform proactively suggests your daily menu based on training load and targets.

Proactive suggestions

AI Coaching

A coach that knows your body

Your Arete AI coach reads your training data, analyzes each session in context, and responds like a coach who's been watching you for years — because in a sense, it has.

After every workout, receive a structured debrief: what went well, what the data signals, and what to focus on next. No generic advice. No templates. Just coaching that's actually yours.

Post-session analysis delivered automatically
Ask anything — training, nutrition, race strategy
Integrates all your data for context-aware responses
Arete Coach · Post-session
How did my tempo run look today compared to last week?
Strong progression. Today's 35-min tempo averaged 172W vs. 168W last Tuesday — same HR zone, +2.4% power output. Your decoupling improved too: only 1.8% vs. 3.1% before.
Should I push the interval session tomorrow or back off?
Your TSB is sitting at −18 today — you're in productive form, but not far from the edge. I'd run the session as planned but cap the final rep if your HR climbs above 178 bpm. Recovery nutrition tonight matters — you're 200 kcal under your training target.

📷
Photo recognition
Snap a meal and get instant nutritional breakdown — no manual entry needed
Barcode scanning
OpenFoodFacts, Czech food DB, and AI fallback — almost nothing goes unrecognized
💧
Workout fueling tracker
Log gels, bars, and hydration mid-session. See how fueling correlates with performance
Today's macros · 2,640 kcal
Carbs
342g
Protein
168g
Fat
72g
Nutrition

Fuel the athlete you're becoming

Most athletes train hard and eat randomly. Arete Balance closes that gap — making nutrition tracking fast enough to actually do every day.

Whether you're deep in a triathlon training block or building your aerobic base, your nutrition adapts with you. The Smart Pantry even suggests your daily menu based on tomorrow's session.

Coach insight

"You have a long ride tomorrow — 3h15 at zone 2. Tonight, aim for 180g carbs with dinner. Your pantry has oats, sweet potato, and rice pasta ready."


Analytics

The full picture of your fitness

Performance Management Chart, volume trends, and plan compliance — everything coaches and athletes need to make smarter decisions.

Performance Management Chart — Last 90 days
CTL (fitness)
ATL (fatigue)
TSB (form)
Jan Feb Mar Apr
CTL (fitness)
74.2
↑ +3.1 this week
ATL (fatigue)
89.4
↑ +12.6 this week
TSB (form)
−18
Productive zone
Plan compliance
91%
↑ +4% vs. last block

Deep data

Lab results meet the dinner table

Track biomarkers alongside your grocery list. When physiology and nutrition speak the same language, everything improves.

🔬
Lab Results
VO₂max (CPET)
68.4 ml/kg/min Excellent
Lactate threshold 2
284W ↑ +8W
Body fat %
11.2% On target
Ferritin
38 μg/L Monitor
Vitamin D
62 nmol/L Good
🥗
Smart Pantry — Today's suggestion
Based on tomorrow's long ride (3h15) · Target: 3,100 kcal
Overnight oats with banana
Breakfast · 680 kcal
+ Log
Sweet potato & chicken bowl
Lunch · 840 kcal
+ Log
Rice pasta, salmon, spinach
Dinner · 920 kcal
+ Log
Dates + almond butter
Snack · 280 kcal
+ Log

For Coaches

Manage your athletes, not your spreadsheets

Arete Balance is built for coaches managing multiple athletes. See everyone's training status at a glance, communicate in their language, and let AI handle the analysis.

The platform speaks both Czech and English — so you can coach local Czech athletes and international clients from the same dashboard, with no switching.

🇨🇿 Czech
🇬🇧 English
+ more coming
TN
Tomáš Novák
Ironman · Build phase
Peak form
LK
Lucie Kovářová
70.3 · Base phase
Building
MH
Martin Hájek
Duathlon · Recovery
Rest week
SB
Sarah Bell
Ironman · Taper
Race ready
+ View all athletes
⸻ ἀρετή ⸻
Start today

Excellence begins with knowing.

Join endurance athletes using Arete Balance to train smarter, eat better, and reach their potential with an AI coach that truly understands the sport.

Free to start · No credit card required · Czech & English support