Vigor Privacy Policy

Last updated: 2026-07-08. Applies to the Vigor iPhone app and its Apple Watch companion.

Summary

Vigor is built for privacy. The app reads certain health data from Apple Health, uses it only to compute your body-energy score on your device, and never transmits your health data off the device. Vigor has no user account, no server of its own, no analytics, no advertising, and no third-party code that sends data anywhere. Your health data never leaves your device; the only thing you can choose to share is your energy score with friends, through the optional, opt-in Circles feature described below, stored in your own Apple iCloud. Your health data stays under your control in Apple Health.

Who we are

Vigor is published by the developer named on the App Store listing. For any privacy question, contact thomas.frosio@gmail.com.

Health data Vigor reads

With your explicit permission, Vigor requests read-only access to the following Apple Health data types. It uses them solely to estimate your body-energy score and the insights shown in the app:

• Heart Rate Variability (SDNN)
• Beat-to-beat heartbeat series (RR intervals), used to refine heart rate variability
• Heart Rate
• Resting Heart Rate
• Sleep Analysis, including sleep stages where available
• Workouts
• Active Energy Burned
• Wrist Temperature (sleeping)
• VO2 max (cardio fitness)
• Date of Birth and Biological Sex (characteristics), used to personalize the model

Vigor requests read-only access. It does not write any data into Apple Health.

How your data is used

All processing happens on your device. Vigor reads the data types above from Apple Health, computes your body-energy score and timeline locally, and displays the result. That is the only use.

• Vigor does not transmit your raw health data off the device.
• Vigor does not sell, rent, or share your health data with anyone.
• Vigor does not use your health data for advertising, marketing, or data mining of any kind.
• Vigor does not store your health data in iCloud, CloudKit, or any cloud service. The only cloud storage is the optional Circles feature: if you opt in, your chosen display name and your current energy score are stored in your own Apple iCloud (see the Circles section below).
• Vigor contains no analytics or crash-reporting SDKs and no third-party code that sends data off the device.

Circles (optional friend sharing, off by default)

Circles is an optional feature that lets you share your current energy score with a small group of friends you invite, and see theirs. It is turned OFF by default: nothing in this section applies unless you deliberately turn Circles on in the app.

• What is shared: only your chosen display name, an optional avatar emoji if you set one, and your current energy value (0 to 100) with its zone and trend and the time it was last updated. A friend can also send you a short, non-medical "rest", "cheer", or "check in" nudge, which carries only the sender's display name and the nudge type. Your health measurements themselves (heart rate, heart rate variability, sleep, workouts, and so on) NEVER leave the device.
• Who can see it: only the members of a circle - friends you personally invited with a private link, or whose invitation you accepted. It is never public.
• How it is stored: in Apple iCloud (Apple's CloudKit service), under your own Apple account. The developer operates no server, never receives your data, and cannot read what you share.
• Your controls: you can leave a circle you joined, remove a member from a circle you own, and turn Circles off anytime in the app's Settings. Turning it off stops further sharing, stops circle notifications on the device, and deletes the sync subscriptions. To delete data you already shared, manage Vigor's iCloud data in Settings, your Apple ID, iCloud.

No account, no tracking

Vigor has no login and no user account of its own; the optional Circles feature uses your own Apple iCloud account, never a Vigor account. Vigor does not track you across apps or websites and does not link any data to your identity for advertising. No App Tracking Transparency prompt is shown because Vigor does not track.

Notifications

The optional morning briefing and evening outlook are local notifications, composed and scheduled entirely on your device. No notification content is sent to or through any server other than Apple's standard on-device notification system.

What Vigor stores on your device

Vigor saves only small app settings locally on your device, such as your chosen visual theme, your energy-model settings (sensitivity preset, sleep need, morning target), any day tags you add (for example alcohol, caffeine, sickness, or travel), whether sample-data mode is on, and the end-of-day energy value used to seed the next day. These settings contain no personal health records and never leave your device.

Data retention and deletion

• Your health data remains in Apple Health, under your control. Vigor keeps no separate copy off your device.
• You can revoke Vigor's access to Health data at any time in Settings, Privacy and Security, Health, Vigor.
• Deleting the Vigor app removes its on-device settings. Your Apple Health data is not affected by deleting Vigor.
• If you opted into Circles, the shared display name and energy score live in your own Apple iCloud. Turn Circles off in the app to stop sharing, and delete the already-shared data by managing Vigor's iCloud data in Settings, your Apple ID, iCloud.

Children

Vigor is a general wellness app and is not directed at children. It reads health data only on your device and shares nothing with anyone unless you deliberately opt into Circles, which shares only your display name and energy score with friends you invite.

Not a medical device

Vigor is for general wellness and information only. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare professional before making health decisions.

Changes to this policy

If this policy changes, the updated version will be posted at this URL with a new "Last updated" date.

Contact

Questions about privacy: thomas.frosio@gmail.com.