Train with
the
Sun.
The world's first fitness app that adapts to your environment — daylight, weather, temperature, and seasonal rhythm. Your body isn't the same every day. Now your training isn't either.
Light Arc Dashboard
Helsinki, Finland
The Problem
Most apps treat every day the same.
A workout plan generated in July doesn't know it's December. It doesn't know you have 5 hours of daylight, -15°C outside, and your energy is at seasonal rock bottom.
Static plans don't adapt
Generic apps ignore the single biggest driver of human energy: the environment you live in. Your plan is the same in January as July.
80% churn within 90 days
Most fitness app users quit by March. The app never asks why. The real reason: they're fighting their biology, not their willpower.
No environmental safety
Apps suggest outdoor cycling in storms, HIIT in extreme heat. Without real-world context, recommendations can be actively harmful.
Capabilities
Everything your environment knows,
now in your pocket.
Six interconnected systems that turn real-world data into a fitness plan that actually fits your life.
LIGHT INTELLIGENCE
Light Arc Dashboard
Watch your daylight cycle in real-time. Sunrise, sunset, solar noon, and how today's light compares to yesterday and last year — visualized beautifully.
AI ENGINE
Activity Recommender
Weather right now + your recovery state + your location + your history = one specific recommendation. Not a menu of options. The right thing for today.
SEASONAL SCORING
Alignment Score
A weekly 0–100 score measuring how well your activity matches your environment. Pushing too hard in dark months? Coasting in peak season? Aurinko tells you.
PREDICTIVE HEALTH
Burnout Predictor
HRV trends + sleep + mood + seasonal data = early warning before you overtrain. Know a week before your body breaks, not the day after.
CONNECTED
Wearable Sync
Connect Garmin (Fitbit + Apple Health coming) to automatically import HRV, steps, sleep, and heart rate. The 30-second check-in gets even shorter.
NUTRITION ENGINE
Seasonal Recipes
Quick recipes built around seasonal produce at your location, your post-workout needs, and the current weather. Under 20 minutes, locally sourced.
Seasonal Intelligence
One app, four seasons,
infinite adaptation.
Aurinko doesn't just adjust — it fundamentally restructures your training philosophy as the seasons shift.
Winter
RestoreNov – Feb · 5–8 hrs daylight
Short days demand longer recovery. Aurinko shifts training to base-building, indoor strength, and mental conditioning.
Spring
SurgeMar – May · 10–18 hrs daylight
Light returns. Motivation surges naturally. Aurinko helps you gradually increase volume as your physiology catches up.
Summer
PeakJun – Aug · 16–21 hrs daylight
Maximum daylight, maximum potential. Aurinko pushes intensity and rewards every outdoor training window.
Autumn
HarvestSep – Oct · 10–14 hrs daylight
Lock in summer gains, build indoor habits before winter. Aurinko guides the transition without the drop-off.
How It Works
30 seconds. Done.
Quick check-in
Rate your energy, mood, and sleep in 3 taps. Or describe how you feel in plain text — AI extracts the rest.
AI reads the world
In the background: sunrise time, current weather, your HRV, seasonal phase, recent patterns. All synthesized instantly.
Get today's plan
One specific recommendation. The right activity, at the right time, with the right intensity. No scrolling through options.
Pricing
Start free. Go premium when
you're ready.
No trial limits. No feature gating on the basics. The premium tier adds intelligence that compounds over time.
Free Forever
Everything you need to start training with your environment.
- Daily check-in & recommendation
- Light arc dashboard
- 7-day activity history
- Basic AI activity recommender
- 1 seasonal recipe per day
- Basic sleep target
Premium
Most popularFull environmental intelligence, wearable sync, and AI insights that compound over time.
- Everything in Free
- Full AI recommender (weather + location + age)
- Seasonal alignment score
- Burnout predictor
- Wearable sync (Garmin +)
- AI-generated weekly reports
- Year-over-year comparisons
- Smart adaptive training plans
- Unlimited seasonal recipes + macros
- Nutrition gap alerts
- Adaptive sleep schedule (HRV-aware)
Ready to train
with nature?
Join thousands training smarter by working with their environment, not against it. Your first season alignment report is free.
No credit card required · Cancel anytime · Under €15/mo to run until 500 users