Stress tracking simplified for Apple Watch.
See how your body responds throughout the day. Using continuous heart rate variability data, understand your stress and recovery in real time without subscriptions or cloud uploads.
Your body’s stress, right on your wrist.
Glance at your Apple Watch and immediately see your body’s autonomic balance. No questionnaires, no manual logs: just pure, continuous heart signals.
Heart Rate Variability (HRV)
When you are calm, the milliseconds between consecutive heartbeats vary smoothly. When under physical or mental strain, the rhythm becomes rigid. The app translates this into an intuitive 0–100 score.
Continuous 24-Hour Timeline
Your watch passively logs shifts during meetings, workouts, and rest, helping you clearly identify which situations elevate tension and which help you recharge.
100% Private on Your Devices
All calculations run locally on your Apple Watch and iPhone via Apple Health. Your health data never leaves your hardware and is never shared with anyone.
Understand your day and know when to take a break.
Stress changes constantly. The daily graph highlights your peak moments, while the weekly retrospective prevents cumulative fatigue from creeping up.
Your stress curve across the full 24 hours.
See at a glance how your morning started, how your workday impacted your nervous system, and whether your body successfully settled down before sleep.
Measure your recovery. Understand your sleep.
Managing stress isn’t just about daytime pressure — it’s about waking up with the energy your body needs to thrive.
The Recovery Index
Every morning, the app analyzes your overnight heart rate variability and resting pulse against your recent baseline. You’ll know with precision if you are ready to push hard or if your body needs a lighter day.
The Sleep Score
Eight hours in bed doesn't always mean quality rest. By tracking sleep stages and how deeply your heart rate drops overnight, the app reveals the true restorative quality of your sleep.
Designed specifically for Apple Watch.
Keep your stress score front and center on your favorite watch face or check in with Moodles, companion avatars that reflect how your body feels.
Glanceable Watch Face Complications
Add live stress and recovery gauges directly to your Modular, Infograph, or Activity faces to stay aware with just a raise of your wrist.
Meet Moodles: Emotional Avatars
Friendly visual companions that reflect your heart data through warm expressions, making stress awareness intuitive, friendly, and approachable.
Your health data belongs solely to you.
Health metrics are deeply personal. Stress Tracker is built without user accounts, cloud servers, or third-party tracking.
Processed strictly on your hardware
Zero Cloud ServersAll HRV algorithms, sleep evaluations, and stress models run locally inside the isolated Apple HealthKit sandbox on your watch and phone.
No accounts, logins, or emails
No Sign-Up RequiredYou never have to create a profile or hand over your email. Open the app and start tracking immediately.
Zero ads and native Swift performance
Native watchOSEngineered natively for watchOS with minimal battery usage. There are no advertising trackers, analytics SDKs, or data harvesting.
One single payment. Lifetime access.
No monthly subscriptions or unexpected renewals. Pay 8.99€ once on the App Store and enjoy full stress and recovery tracking forever.
Own the app completely. Download from the App Store and start tracking immediately on Apple Watch and iPhone.
Download on App StoreEverything you need to know.
Clear answers on heart rate variability, Apple HealthKit privacy, and compatibility.
Start understanding your body today.
Available on the App Store for Apple Watch and iPhone. One-time purchase, lifetime access, zero subscriptions.
Download on App Store8.99€ · Lifetime License · Apple Watch & iPhone