Gearstack Health

Your readinessfrom HRV, sleep and load.

For Apple Watch, Fitbit, or just your iPhone.On the App Store now, free to start.

Gearstack reads your health data, puts sleep, load and recovery in context and tells you every morning how much training fits today. The explanation sits in full sentences next to your values, and the data stays with you.

€4.99 / month
Aerobic efficiency

Same pace,lower pulse.

Eight weeks of easy runs, the same pace, 152 down to 141 beats: around 8 % more distance per heartbeat. Gearstack runs that comparison week by week on your own runs.*

A runner on an outdoor route with sunlight from the side.
Aerobic efficiency, 8 weeks
Week 1Week 8Change
Pace (min/km)5:215:20unchanged
Avg HR (bpm)152141−11
Distance per heartbeat1.23 m1.33 m+8 %
Same pace, 11 beats fewer: the heart does the same work with less effort.
*Example calculation from comparable runs. Gearstack shows your own trend, never other people's averages.
Inside the app

What the app shows

Example values

Training

Strength, running and footballin one calendar.

Your strength, running and football plans sit in one calendar. The coach sorts what is due today, and for runs there are duels and group goals with friends.

Your calendar

Training and shifts in one calendar

Strength, running and football land in your calendar automatically, alongside your shifts.

Your Coach

AI Coach with context

The coach turns sleep, readiness and training into one recommendation and, when asked, explains it with your own values.

Competition

Group goal or duel

Team goal
342of 500 km

8 runners, every run counts.

Duel over 5 km
24:38against 25:11

Ghost mode: 180 m ahead.

Sample values

Mindfulness

Breathing exercises andmeditation.

Guided breathing exercises and meditations for the moments when you consciously want to wind down.

Breathing

Breathing

Meditation

Meditation

Compatibility

Works with your setup

Your iPhone is enough to start: check-ins, training, nutrition and analysis run without an extra device. Every additional device adds more values, and Gearstack reads the devices you already wear.

  • Apple Watch
    HRV, resting heart rate, sleep stages, workouts and daily values flow in automatically.
  • Polar H10 chest strap
    Connects to the app directly over Bluetooth and delivers live heart rate during training.
  • Fitbit
    Linked directly to your Fitbit account, no extra apps needed. Sleep, heart rate and activity sync automatically.
  • Via Apple Health
    Garmin, Polar, Oura, Whoop, Suunto, COROS, Withings, Amazfit and many more: any device whose app syncs with Apple Health becomes part of your daily readiness.

All brands are property of their respective owners and are named for compatibility purposes only. The data that arrives depends on what each manufacturer's app writes to Apple Health.

Trust

Your datastays with you.

First impressions from people testing Gearstack Health in everyday life.

I'm no health nerd. But seeing how my HRV reacts to bad nights made me take recovery seriously. I feel more stable during the day.

S
Sascha Brangenberg
Everyday health

What helps me most: Gearstack doesn't say ‘more exercise’, it says ‘less coffee today, go to bed earlier’.

S
Steffi Brangenberg
Health & family

I'm over 50 and pretty tech-sceptic. The app explains values in sentences, not charts. First time I actually understand what my body is doing.

Z
Zaklina Bezjak
Health & prevention

I plan sessions by the Readiness Score. Two weeks of testing and I completely restructured my training plan.

K
Kimo Resch
Endurance & strength

I used to push to exhaustion. Gearstack shows when my body is actually ready. Fewer setbacks, better results.

D
Donat Gervalla
Competitive athlete

The 24/7 coach doesn't replace a trainer, but answers at 11pm when I have an HRV question. Priceless when you don't have a full support team.

L
Leon Lamade
Endurance athlete

I'm no health nerd. But seeing how my HRV reacts to bad nights made me take recovery seriously. I feel more stable during the day.

S
Sascha Brangenberg
Everyday health

What helps me most: Gearstack doesn't say ‘more exercise’, it says ‘less coffee today, go to bed earlier’.

S
Steffi Brangenberg
Health & family

I'm over 50 and pretty tech-sceptic. The app explains values in sentences, not charts. First time I actually understand what my body is doing.

Z
Zaklina Bezjak
Health & prevention

I plan sessions by the Readiness Score. Two weeks of testing and I completely restructured my training plan.

K
Kimo Resch
Endurance & strength

I used to push to exhaustion. Gearstack shows when my body is actually ready. Fewer setbacks, better results.

D
Donat Gervalla
Competitive athlete

The 24/7 coach doesn't replace a trainer, but answers at 11pm when I have an HRV question. Priceless when you don't have a full support team.

L
Leon Lamade
Endurance athlete

How we handle health data

Encrypted in transit, stored in the EU, deletable at any time.

  • Your data is yours
    Encrypted transfer, no sharing with third parties, fully deletable anytime.
  • EU servers, GDPR
    Stored and processed under European data protection.
  • Not a medical device
    Gearstack supports your health but does not replace a medical diagnosis.

Healthcare packages

Packages for app, strap and band.

BYOD

Health Pro BYOD

Available now on the App Store.

  • 24/7 HRV & sleep tracking
  • Readiness score & daily briefing
  • Strength, running coach & football hub
  • Apple Watch trends over time
  • Personal AI health coach
Cancel monthly
€4.99/ month
Yearly€49.99/ year

*V1 is the first public version of Gearstack Health. Features will continue to expand after launch.

For organisations

For practices, camps and companies.

Team dashboard for clubs
Clubs
Team dashboard for clubs
The app

Gearstack HealthReadiness, training
and nutrition.

Readiness, sleep, nutrition and training in one app. Run, strength session or a walk, Gearstack turns it into your next step. Plus a dedicated watch app with complications, lock screen widgets, friends and groups for shared weeks, and reminders that follow your sleep rhythm.

iPhone and Apple Watch, iOS 17 or newerAndroid is in progress
Questions

Quick answers

The key points about the available V1.

Launch & pricing

Yes. Gearstack Health is available now on the Apple App Store. Download it free and get started right away.

€4.99 per month, cancellable monthly. The yearly plan is €49.99, which works out at about €4.17 per month. Both include the same features.

An Apple Watch is enough for launch. Gearstack reads the available Health data and turns it into clear context inside the app.

App & coach

The coach turns readiness, sleep, load and routines into clear next steps. It helps you read your day faster. It does not diagnose. Answers are produced by generative AI; they can occasionally contain errors and are labeled as AI content in the app.

Yes. V1 connects readiness, nutrition, strength training, running coach and football in one app.

Privacy

Your data belongs to you. We never sell health data and treat it as highly sensitive: analysis scores are computed on the device, sync runs on EU servers, and the AI coach only receives pseudonymized vitals. See the privacy policy for details.

No. Gearstack Health is a wellness and prevention product. It does not replace medical diagnosis, treatment or emergency care.

Yes. The subscription is managed through the App Store and can be cancelled there at any time.

Another question?

We respond within 24 hours.

support@gearstacklabs.com