Privacy

Your data.
Your device

You choose which data to share. Arry processes health data locally on your device.

Updated: 5 June 2026

Introduction

Arry respects your privacy. Below is what data the app uses and why.

What data we use

Apple Health (HealthKit) data

With your permission, Arry reads from Apple Health:

  • Heart & respiration: heart rate, resting heart rate, heart rate variability (HRV), VO₂max, respiratory rate, blood oxygen (SpO₂).
  • Sleep: sleep duration and stages, wrist temperature during sleep.
  • Activity: workouts, steps, distance, active and basal energy, workout routes.
  • Body: height, weight, body temperature and basal body temperature.
  • Nutrition: water, caffeine, alcohol.
  • Reproductive health (with separate permission): menstrual cycle and bleeding data, ovulation test results, cervical mucus, basal body temperature.

Important: you control access to each Apple Health data type in iOS settings and can revoke it at any time.

Writing to Apple Health

If you log data manually in the app (for example water, caffeine, alcohol, or cycle entries), Arry can — with your permission — write it back to Apple Health so it appears in your overall health picture. Writing happens only when you grant the “write” permission in Apple Health.

Flow journal (data you enter yourself)

In the Flow section you can log lifestyle factors: caffeine, alcohol, water, screen before bed, meditation, mood, and notes. Arry compares these with your sleep and recovery data to find personal patterns. These entries are stored on your device; some of them (water, caffeine, alcohol) sync to Apple Health with your permission.

Cycle & pregnancy

If you turn on cycle tracking or pregnancy mode, Arry processes menstrual cycle data, symptoms, and — when enabled — pregnancy, to adapt recovery metrics and recommendations. This is sensitive health data: it is processed on your device, not shared with third parties, and not used for advertising. You can turn off these modes and delete the related data in the app at any time.

Location data

If you use workout features, Arry may use GPS for:

  • detecting workouts;
  • mapping your route during a workout.

Important: location data is used only for app features and is not used for advertising.

Weather data (Open‑Meteo)

If you enable weather for workouts, the app sends coordinates and workout time to Open‑Meteo to fetch conditions. The request is made from your device.

Export to an AI assistant (optional)

On the workout screen you can tap “Export to AI”. Arry prepares a text summary of the workout and opens the iOS Share sheet — you choose where to send the data (for example ChatGPT, Claude, Notes). Data leaves your device only when you send it yourself, and goes to the third-party service you choose, which operates under its own terms. Arry does not send this data automatically.

What we do not collect

  • We do not ask for your name, email, or phone to use the app.
  • We do not sell your data.
  • We do not use advertising trackers to follow you across other apps.

Health data (Apple Health, the Flow journal, cycle) is used in Arry only to calculate recovery metrics, analytics, and in-app recommendations. We do not use it for personalised advertising, marketing, or selling to third parties.

Anonymous usage analytics

To understand which features you use and improve the app, Arry collects anonymous interaction analytics via TelemetryDeck (for example: which screens are opened, which insights are viewed).

  • These events contain no health data (HRV, heart rate, sleep, recovery scores are never sent).
  • Analytics are anonymous: no name, email, advertising identifiers (IDFA), or cross-app tracking.
  • TelemetryDeck derives an anonymized install identifier on the device itself; we cannot tie events to your identity.
  • Data is processed in the EU (TelemetryDeck GmbH), GDPR-compliant.

How we use the data

Data is used only for app features:

  1. Recovery analysis: readiness metrics.
  2. Recommendations: load and recovery guidance.
  3. Analytics: sleep, heart rate, HRV, and load charts.

Where data is stored

  • Data is stored locally on your device.
  • We do not sync it to our own cloud.
  • When you delete the app, data is removed from the device.

Sharing with third parties

  • Open‑Meteo: only when you use the weather feature. Terms: https://open-meteo.com/en/terms
  • TelemetryDeck: anonymous usage analytics (no health data, no personal data). Policy: https://telemetrydeck.com/privacy/
  • An AI assistant of your choice: only when you use the “Export to AI” feature yourself and send a workout summary via the Share sheet. The data goes to the service you pick (e.g. ChatGPT, Claude) and is processed under its terms.
  • No one else: we do not sell or rent your data.

Your control

  • Manage HealthKit access in iOS settings.
  • Revoke access in iOS settings at any time.
  • Request data deletion by emailing hello@arry.app. We will process requests within 48 hours.
  • Delete the app and data at any time.

Medical limitations

Arry is not a medical device and does not provide diagnoses, replace a doctor’s advice, or serve as emergency medical care. All recommendations in the app are for information and support only.

Security

  • All data is transmitted over HTTPS.
  • Data is protected by iOS security.
  • Access is governed by iOS permissions.
  • We use only the data needed for Arry’s features.

Policy changes

We may update this policy. The date at the top will change when we make material updates.

Contact

Note: this policy applies to Arry. Apple/HealthKit and Open-Meteo have their own terms.

Also relevant: how Arry interprets recovery signals is described on the methodology page. Who builds Arry and how site materials are prepared is described on the about page.