Systoly Privacy Policy
How Alexandr Korsak (Bitscorp) collects, uses, and stores data in the Systoly mobile app (co.bitscorp.systoly).
Privacy Policy
Effective date: 14 November 2026. I take your privacy seriously. This notice explains what Systoly stores on your device, what (if anything) leaves the device, and how to contact me.
Alexandr Korsak (Bitscorp), a self-employed professional (autónomo) in Spain, operates the mobile application Systoly (co.bitscorp.systoly). Bitscorp is a trading name, not a registered company. This page applies to Systoly on iOS and Android. The website https://bitscorp.co has a separate Privacy Policy and Terms and Conditions.
The app
Systoly is a personal log for blood-pressure readings you enter, with optional reminders, medication notes, and an export. Category bands follow published office blood-pressure categories and are for orientation only. Systoly is not a medical device and does not give medical advice.
Data stored on your device
- Readings (systolic, diastolic, optional pulse, arm, position, time, notes, tags), medication notes, reminder times, and settings in a local SQLite database.
- Local reminder notifications. Remote push notifications are not used.
- If you sync Apple Health on iOS, imported blood-pressure samples and the identifiers used to skip a sample that is already in the log.
Data that leaves your device
- Readings and medication notes are not uploaded to a Bitscorp server. There is no Systoly backend.
- A PDF or CSV leaves the device only when you choose to export or share it.
- On iOS, if you use Apple Health, Systoly asks permission to read blood pressure and heart rate and to write blood pressure. The sync imports blood-pressure samples (systolic, diastolic, and time) into the on-device log and can write readings you enter back to Apple Health. Heart rate is part of the read permission; the importer does not store a heart-rate value from Health. Nothing from Health is sent to Bitscorp. This version does not use Health Connect on Android.
- If you send feedback, your email app may include the app version, build number, operating system, and device model in a message to alex@bitscorp.co.
- Purchase and subscription status are handled by Apple or Google and RevenueCat, as described below.
Permissions
- Notifications (optional): local reminders to log a reading.
- Apple Health (optional, iOS): read blood pressure and heart rate, and write blood pressure, only if you run a sync. You can keep the log without Health.
You can change or withdraw permissions in the operating system settings.
Sensitive information
Blood-pressure readings, pulse, and medication notes are health data. They stay on your device unless you export a file or write a reading into Apple Health.
Analytics and crash reporting
Systoly does not include a third-party analytics or crash-reporting SDK. I do not run Mixpanel, Google Analytics, Firebase, Sentry, or a similar product inside this app. The stores and RevenueCat may keep their own purchase or install records under their policies.
Third parties
I only involve the parties below for the purposes stated. Each has its own privacy policy.
- RevenueCat: To check and restore your Pro entitlement. RevenueCat receives purchase tokens, subscription status, and an anonymous app user identifier. It does not receive the journal, photos, files, or other content you keep in the app.
- Apple: If you buy or manage a subscription or a lifetime purchase on the App Store, Apple processes the payment. We do not receive your full payment card number. If you sync Apple Health, blood-pressure samples are read from or written to Health on your device under Apple policies.
- Google: If you buy or manage a subscription or a lifetime purchase on Google Play, Google processes the payment. We do not receive your full payment number.
Accounts, servers, and retention
No Bitscorp server. Readings and medication notes stay in on-device SQLite. Apple Health sync reads and writes on the device only.
Systoly does not require a Bitscorp account. Information stored only on your device remains there until you delete it in the app or uninstall the app. Purchase records are kept by Apple or Google and by RevenueCat for as long as they need them to provide the subscription. If you email me, I keep the message long enough to respond and then delete it when it is no longer needed.
Your rights
Because most Systoly content never leaves your device, the practical way to access or delete it is in the app, or by uninstalling the app (which removes local data). For any personal data I hold in email, or questions about purchase records, write to alex@bitscorp.co. If you live in the European Economic Area, the United Kingdom, or another region with similar rights, you may also request access, correction, deletion, or a restriction of processing of personal data I hold, and you may lodge a complaint with your local supervisory authority. In Spain that authority is the Agencia Española de Protección de Datos (AEPD).
International processing
I am based in Spain. Apple, Google, and RevenueCat may process purchase data in other countries. Their policies describe those transfers.
Changes to this policy
This Privacy Policy is effective as of 14 November 2026. I may update it from time to time. The current version will always be at https://bitscorp.co/systoly/privacy. Material changes will be reflected on this page, and I may also note them in the app.
Contact
Questions about this policy or about Systoly: alex@bitscorp.co. There is no telephone contact number. Related pages: Systoly Terms and Conditions, and the list of Bitscorp app policies.