SYS/DIA: Privacy Policy

Last updated 31 October 2026.

This policy covers the iPhone app SYS/DIA: Blood Pressure Log, published by Setout Labs LLC ("we"). It explains what stays on your iPhone, what leaves it, and how to delete your data. Our company-wide privacy policy covers this website and our other products.

The short version

  • Your readings, notes and reports stay on your iPhone. We never see them.
  • There is no account to create, and we keep no server copy of your readings. Your own iCloud or computer backup includes them if you use one.
  • We use three outside services for usage analytics, crash reports and purchases. None of them receive your readings, notes, reports or Apple Health data.
  • We do not track you across other apps or websites, show ads, or sell your data.

What stays on your iPhone

Everything you enter is saved in a database on your iPhone: blood pressure values, pulse, the date and time, notes, and tags such as which arm you used, plus your medicines and the doses you mark as taken. Readings you import from Apple Health are kept there too, with the name of the app they came from. The app also keeps your reminder times and settings there. To show your widgets, the app also keeps a small copy of your latest reading, your daily averages for the last 7 days and your target in a space on your iPhone that only SYS/DIA and its widgets can read. This database is included in your iPhone's iCloud or computer backup if you use one, so it moves to a new iPhone when you restore from that backup. We have no server that holds a copy. If you delete the app, your history is deleted from the iPhone; older backups keep it until they are replaced.

Apple Health

Saving to and importing from Apple Health are optional and off until you turn them on. When saving is on, the app writes your blood pressure and pulse readings to Apple Health. When importing is on, the app reads blood pressure readings that other apps, such as your cuff's app, saved to Apple Health, plus the matching pulse, and keeps them on your iPhone with your other readings. While importing is on, a reading deleted from Apple Health is removed from the app too. The app never changes or deletes another app's data in Apple Health. Health data is never used for advertising and is never shared with the services listed below.

Apple Ads

Where analytics runs (the US App Store), the app asks Apple once after you install it whether the install came from an Apple Ads ad. If it did, the app records the ad's campaign, ad group and keyword IDs with its usage analytics in Mixpanel. This includes no personal data, and it is not used to track you across other companies' apps or websites.

How service providers handle data

Mixpanel, Sentry and Superwall receive only the data described in this policy. Their data processing terms require them to protect it at least as well as this policy does and to use it only to provide their service to us. They keep it only as long as needed for that, and you can ask us to delete it at any time by emailing the address on our support page.

Reports you share

When you create a PDF or CSV report, the app makes a temporary file and opens the iPhone share sheet. The report goes only where you choose to send it, such as your doctor's email. The app removes its temporary file after sharing. Share my numbers opens the same share sheet with a picture and text of your latest reading or recent average. Any copy you send is outside our control.

Scanning your monitor

If you use Scan cuff, the app takes one photo of your monitor's screen and reads the numbers with Apple Intelligence on your iPhone. Scan cuff needs iOS 27 and Apple Intelligence; where they are unavailable, the button does not appear. The photo is processed on the device and then discarded: it is not saved, not added to your photo library and not sent anywhere. You check the numbers before anything is saved.

What leaves your iPhone

Our app and service providers collect the following data for the stated purposes. None of it is used to track you across other companies' apps or websites.

  • Diagnostics → Crash Data: App Functionality; not linked to you.
  • Diagnostics → Other Diagnostic Data: App Functionality; not linked to you.
  • Identifiers → Device ID: Analytics, App Functionality; not linked to you.
  • Location → Coarse Location: App Functionality; not linked to you.
  • Purchases → Purchase History: Analytics, App Functionality; not linked to you.
  • Usage Data → Advertising Data: Analytics; not linked to you.
  • Usage Data → Product Interaction: Analytics; not linked to you.

We use three service providers. They process data only on our behalf, and we require each to give your data the same or equivalent protection as this Privacy Policy.

  • Mixpanel (usage analytics). Records simple events such as "app opened", "reading saved" or "report exported", tied to a random ID the app creates. Purchase events also include the plan, price and currency. If you answer the optional "How did you hear about us?" question, your answer is recorded too. The events never contain your blood pressure values, notes, times or report contents. Mixpanel also receives basic device details (such as iPhone model and iOS version). Analytics runs only for users of the US App Store; elsewhere it is off.
  • Sentry (crash reports). If the app crashes or hits an error, a report is sent so we can fix it. It includes technical details such as the app version, iOS version and iPhone model. It does not include your name, readings or notes, and we do not attach any user identity to it.
  • Superwall (purchases). Checks whether you have an active purchase and handles the purchase screen's checkout. It uses an identifier Apple assigns to this app on your iPhone, basic device details and your purchase status, and estimates an approximate location (city, region and country) from your network address. Payment itself is handled by Apple; we never see your card or billing details.

What we do not do

We do not track you across other companies' apps or websites. We do not show ads or share your data with advertising networks. We do not sell or rent your data. We do not use your health information for marketing.

Deleting your data

Because there is no account, there is no account to delete. To erase what the app stores, open Settings → Delete all data. You will be asked whether to also delete the copies the app saved in Apple Health or keep them there. Deleting the app from your iPhone also removes its data. Reports you already shared, and data already in Apple Health that you chose to keep, are not affected. Deleting the app does not cancel a subscription; see our terms for how to cancel.

For data held by our service providers, email us at support@setout.ai and we will respond within 30 days.

Your rights

Depending on where you live, you may have the right to access, correct, export or delete your personal data, to object to its use, and to complain to your data protection authority. We will not treat you differently for using these rights.

Children

The app is not directed at children under 13 and we do not knowingly collect their personal data. If we learn that a child under 13 (or the minimum age where they live) has given us personal data, we will delete it. Parents or guardians who believe this has happened should email us.

Changes

If we change this policy we will update the date above. For material changes we will give notice before they take effect.

Contact

Setout Labs LLC, a Delaware limited liability company, is the controller of your personal data.
support@setout.ai