Vigor Privacy Policy

Last updated: 2026-07-29. Applies to the Vigor iPhone app and its optional 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 lets you share your current energy score with individual friends, one connection at a time, and see theirs. It is turned OFF by default: nothing in this section applies unless you deliberately turn it on in the app.

• One to one, never a group: each friend is a separate, private connection. Your friends cannot see each other, and they cannot see who else you are connected to.
• Both people must agree: entering someone's join code sends them a request. Nothing is shared in either direction until they accept it, and declining tells the other person nothing.
• What is shared: your chosen display name, an optional avatar, and values derived from your energy score - the score itself (0 to 100) and its zone, plus, only if you allow it for that particular person, the trend arrow, your week variation, your morning starting number, how much the night gave back, your average morning, how many days in a row you started above it, and the rough shape of your day. Your health measurements themselves (heart rate, heart rate variability, sleep, workouts, and so on) NEVER leave the device.
• You choose per friend: you set separately, for each person, which of those values they see, and you can pause a person without disconnecting.
• Who can see it: only that one friend. It is never public, and a shared link on its own grants nobody access - only the person you accepted can read what you share with them.
• Nudges: a friend can send a short, non-medical "rest", "cheer", or "check in" nudge, which carries only the sender's display name and the nudge type. You can mute a friend's nudges on your device.
• 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 remove any friend at any time, which stops sharing in BOTH directions and deletes from iCloud what you shared with that person. Turning Circles off in the app's Settings removes every connection, deletes everything you shared from iCloud, retires your join code, and stops the notifications and sync subscriptions.

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, what you shared lives in your own Apple iCloud. Removing a friend deletes what you shared with that person, and turning Circles off in the app removes every connection, deletes everything you shared, and retires your join code - you do not need to go and clean it up by hand.

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 values derived from your energy score, with individual friends who have accepted your request.

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.