Privacy Policy

This policy covers POTS, the app for running and tracking an at-home orthostatic stand test, on iPhone, Apple Watch, Android, and Wear OS. We built POTS to keep your data on your own devices, not on a server we run.

Information we collect

Test data.Your stand test results, heart rate readings, blood pressure entries you type in, symptom notes, and any report you generate are stored locally on your phone, using Apple's SwiftData framework on iPhone, or a local database on Android. We do not operate a backend server, and this data is not uploaded to us.

Watch data.If you use POTS on Apple Watch or Wear OS, heart rate data captured during a test syncs directly between your watch and your phone, through Apple's WatchConnectivity framework, or Google's Wearable Data Layer API. Either way, this sync is device-to-device and does not pass through our servers. On both platforms, the watch session used to capture your heart rate is discarded once your test ends, so this reading is never separately saved into Apple Health or Google Health Connect. It exists only inside POTS's own local storage, described above.

Account. POTS does not have an account or sign-in system, on either platform. There is no username, password, or profile tied to your identity anywhere in the app.

Purchases.POTS's one-time Lifetime purchase is processed through RevenueCat, a purchase infrastructure provider we use to manage entitlements across the App Store and Google Play. When you buy (or restore) Lifetime access, RevenueCat receives your purchase and transaction data and a device identifier so it can confirm what you've unlocked; Apple or Google, whichever store you purchased through, processes the payment itself and shares your purchase and entitlement status with the app. We do not receive or store your payment details directly. Apple, Google, and RevenueCat handle that between them. RevenueCat acts as our data processor for this purpose. You can read RevenueCat's own privacy policy at revenuecat.com/privacy.

What we don't use. POTS does not include any analytics, advertising, or crash-reporting software. Nothing about how you use the app is measured or transmitted to us.

This website

Google Analytics.pots.im uses Google Analytics to count page visits, so we can see which guides help people. It records the page address and the general details your browser shares, such as device type and approximate region. It does not receive anything you type into the numbers check or search, runs with Google signals and ad personalization off, and keeps data for 14 months. Any ad blocker, or Google's opt-out add-on, switches it off.

How we use it

Because test data lives on your device, we don't use it for anything, we don't see it. The app uses it only to show you your own history, build the report you ask for, and surface observational notes about your own readings over time.

Data retention

Your test data stays on your device for as long as you keep it there. You can delete a single test from its detail screen, or erase everything at once from Settings; either takes effect immediately and can't be undone. Uninstalling the app deletes whatever is left. We don't apply any other retention period, because we never hold a copy to retain in the first place.

Automated decisions

POTS never makes an automated decision about your health with a legal or similarly significant effect on you. It doesn't score, flag, or diagnose your results. It records what you and your watch measure, and shows it back to you.

If you use iCloud or Google's device backup

If you have iCloud enabled for the app on iPhone, your data may sync across your own devices through Apple's iCloud infrastructure, under Apple's own privacy terms. Similarly, if your Android phone's automatic Google account backup is turned on (this is a device-level default, not something specific to POTS), your local POTS data may be included in that backup, under Google's own backup terms. In both cases, this is your own cloud storage under your own account. We don't have access to your iCloud- or Google-backed-up data.

Your choices

Since your data lives on your device (and optionally your own iCloud or Google account backup), deleting the app deletes your local copy, and you can delete individual tests or everything at once at any time from within the app (see Data retention above). You can view or manage your Lifetime purchase anytime through your device's app store account: the App Store or Google Play.

POTS is not a diagnostic device, and this policy doesn't change that: the app measures and helps you track your own readings, it does not interpret them or store them anywhere we can see.

If GDPR applies to you

If you're in the EU or EEA, GDPR gives you rights over your personal data: access, correction, erasure, restriction, portability, and objection. In practice, because POTS never receives or stores a copy of your data on any server we control, most of these are things the app already gives you directly: you can see everything it holds by opening the app, take a portable copy with the PDF/CSV export, and erase it with the delete or erase-all controls described above. We're currently reviewing whether GDPR's exemption for purely local, on-device processing applies to POTS given this storage model; we'll update this policy with any further disclosures that review turns up, including an EU representative if one turns out to be required.

Questions? privacy@pots.im