Privacy Policy
Last updated November 7, 2026. WatchVO2 is in development; we will update this policy before launch if anything below changes.
This policy covers the iPhone and Android apps. Where a section mentions your iPhone, Apple Health, Sign in with Apple or Apple purchases, it describes the iPhone app; the Android app is described in its Android sections.
This policy explains how WatchVO2 (the iPhone and Android apps and watchvo2.com) handles information. The app is operated by Solstice Labs LLC, a Colorado limited liability company, 215 S Wadsworth Blvd Ste 400, Lakewood, CO 80226 ("we").
Summary
The iPhone app and the Android app keep your readings on your own phone. The Android app reads the health data types below from Health Connect only after you allow them; your readings are not uploaded, and your data is not used for advertising. The Android app shows ads only for our other apps; an optional $19.99/year subscription removes them.
The zone bands you save are stored on your phone. On iPhone, workout and VO₂ samples are read from Apple Health.
Important information
Zone minutes and averages are estimates from the samples available. They are not a prescription and not a diagnosis. A coach or clinician can help you choose a band if you want one.
Heart-rate and VO₂ samples stay in Apple Health. We do not receive them.
Information we collect
- If you choose to create the optional account: your email address or Sign in with Apple identifier, and the name Apple shares if you allow it
- If you purchase the optional supporter subscription: purchase and subscription status
Information we do not collect
- Location, contacts, or an advertising identifier
- Tracking across other companies' apps
- A copy of your heart-rate or VO₂ samples on our servers
Health information
WatchVO2 summarizes workouts and VO₂ max values already in Apple Health. It is not a medical device, does not prescribe training, and does not diagnose fitness or heart disease. Stop and seek care if you feel chest pain, faintness, or severe shortness of breath.
Optional account
You can use every feature without an account. The Android app has no account. On iPhone, if you choose to sign up (with email or Sign in with Apple, 18 or older only), one account works in all of our apps. We store your email or Apple sign-in identifier, which of our apps you've signed in to, your marketing and beta choices in each app with the time you made them, and an optional backup of each app's settings and records. Health readings and photos are never included. If you have an ad-free subscription, we also store its end date and Apple's transaction identifier (checked against Apple's signature) with your account. You can sign out, turn choices off, or delete your account any time from Profile; deleting it removes it and its backups in all of our apps. See our suite account page for what the shared account stores and how to delete it.
If you sign in with a verified email address or Apple ID that also belongs to a NearbyGrid account, our accounts server checks whether that NearbyGrid account is in good standing and was active in the past 7 days. If it was, your Solstice Suite apps are ad-free until 7 days after that activity. The only result the check gives is whether you qualify and until when; that date is held briefly in the server's memory (up to 10 minutes), is not saved to your suite account, and no other NearbyGrid information is shared with the suite apps.
Our apps on your iPhone
To avoid promoting apps you already have, the app checks whether our other apps are installed on your iPhone. It can only check for our own apps, and the result stays on your device. If you buy an ad-free subscription, the app saves its end date in a place only our apps can read, so our other apps on the same iPhone can turn ads off too.
iOS permissions
- Apple Health — To read workouts, heart rate, and VO₂ max you allow. The app does not write those samples.
- Notifications (optional) — For optional reminders you choose. Notifications do not include your Health readings.
Android and Health Connect
On Android, WatchVO2 reads these Health Connect record types, and only after you grant access in the Health Connect permission screen:
- VO₂ max
- Exercise sessions
- Exercise route
- Distance
- Heart rate
- Resting heart rate
- Heart-rate variability
- Steps
- Sleep
Exercise route is location-derived and is treated as sensitive: it is read only for the route feature and is never used for advertising or shared. You can revoke any type at any time in Health Connect; the app then shows only what remains available. The readings stay on the phone in the app’s own storage. They are not uploaded, and the Android app has no account.
Purchases, crashes, network
The optional subscription is sold through Google Play; RevenueCat receives the purchase receipt and subscription status so it can be restored on another install signed into the same Google Play account. WatchVO2’s Android app has no advertising identifier; Firebase Analytics is not included. A connection is used only for the optional purchase and to send crash/diagnostic reports to Sentry (stack trace, app version, device model, Android version, and a short trail of screens/actions/URLs without query strings; no user identity, screenshots, view hierarchy, cookies or headers).
Service providers
We use a small number of providers only to run the app. They may not use your information for their own purposes.
- RevenueCat — Processing the optional supporter subscription and restoring purchases. It does not receive your app content.
- Sentry — crash and performance diagnostics via Sentry; no account, email or content
Advertising
Any ads in our apps promote only our own apps. We do not sell personal information, do not share it for cross-app advertising, and do not use Apple's advertising identifier to track you. The Android app has no advertising identifier.
Purchases
On iPhone, optional supporter subscriptions are processed by Apple. On Android, they are sold through Google Play. We receive purchase status (for example, whether a subscription is active) but never your payment card details.
This website
This website (watchvo2.com) uses Cloudflare Web Analytics to count page views. The counter sets no cookies, stores nothing on your device and does not build a profile of you across sites. Cloudflare hosts this website: it receives the page address, referring page and browser type of each visit to produce these counts, and it processes standard request logs to serve the pages. See Cloudflare's privacy policy. This website does not use Google Analytics or advertising cookies. What the app itself collects is described in the rest of this policy.
Children
The app is not directed to children under 13, and we do not knowingly collect their personal information.
Your choices and rights
You can use the app without an account, turn off notifications and permissions in iPhone Settings, and delete local data by deleting the app. To access or delete information connected to you, email privacy@solsticesuiteapps.com. Depending on where you live (for example, the EU, UK or California), you may have additional rights, and we will honor them.
Retention and security
We keep information only as long as needed for the purposes above and protect it with reasonable safeguards.
Changes
We will post changes here and update the date above.