Mi Presión Privacy Policy

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Effective October 1, 2026.

Who is responsible

Mi Presión is published by RANKT LLC, a Florida (United States) company. For any question about your data, write to soporte@mipresion.app.

What the app records

Only what you (or the person who helps you) type into it:

• Your blood pressure and pulse readings, with the date and time of each one.
• Your name, as you typed it when you started.
• The contacts you chose for the call button (their name and number).
• Your measurement times and, if you added them, your medicines and their times.
• If someone helps you, their name and phone number, which they type on their own phone so that you can call them with one tap.

The app does not ask for your email, phone number or location, and it does not read your address book: when you pick a contact, iOS shows its own picker and hands the app only the card you tapped.

There is no account. No email, no password, no username: your phone identifies itself to the server with an anonymous identifier the app generates on its own the first time. It cannot tell anyone who you are, but it does link together everything that phone writes.

Where it is stored

As long as you are not sharing with anyone, everything is stored only on your phone. Nothing leaves it unless you send it yourself (a report over WhatsApp or a PDF, for example).

When you share with a family member, your household's readings, schedules and settings sync through a server in the United States so both phones see the same thing. That data travels encrypted and is stored encrypted. From the app, only your household's devices can read it — yours and those of up to three people you accepted with a code shown on your phone — and the server enforces that with per-household access rules.

As with any service that has a server, whoever administers that server has technical access to the database. Today that person is the one who publishes the app. We do not read anyone's data, but it would not be honest to say it is technically impossible.

If you stop sharing, that family member stops seeing your readings from that moment and their phone empties itself the next time it connects. If the last family member helping you leaves, whatever was on the server is deleted; yours stays whole on your phone.

The iCloud backup

If iCloud backup is on, the app is included in that backup like any other, encrypted by Apple. That backup includes your household credential, so anyone restoring a backup of yours onto another phone would enter your household as if it were yours. It is the same reach any other app's iCloud backup has, and it is avoided the same way: by protecting your Apple account.

If you lose your phone

Two things, in this order: close the household from the other phone, which cuts off access to the server at once and deletes everything of the household from it, and erase it with Find My iPhone, which is the only thing that reaches what was stored inside the device.

Whatever is on a phone that is switched off stays there, encrypted by the system and behind the device passcode, until someone turns it on. No app can erase a phone that is off, and we would rather say so than promise otherwise.

Network addresses

So that nobody can guess linking codes by trying them over and over, the server counts failed attempts per network group. It does not store your IP address: it stores a value derived from it with a secret key — a salted hash — that cannot be turned back into the address, and it deletes that value after seven days. It is not used for anything else, and it cannot tell anyone where you are.

Who else sees anything, and what

Three services are needed for the app to work:

• Supabase (United States) is the server this policy talks about: while you are sharing, your name, your readings and your household settings live there.
• Expo delivers the notifications and serves the app's updates. It receives an identifier for your phone — the one needed to send it a notification — and which version you have installed. It does not receive your readings or your name.
• Apple delivers the notifications to the phone, as in any iPhone app.

There is no other. The app does not make a single network call that is not to those three.

What we do not do

• No usage analytics and no tracking tools.
• No advertising.
• We do not sell, rent or share your data with anyone.
• We do not use your data to train anything or for any purpose other than showing it to you and your household.
• There are no advertising identifiers and no iOS tracking permission: the app never asks you for it because it has nothing to ask for.

How to delete everything

In Settings › About Mi Presión › Delete all my data. The app asks twice, leaves the phone as freshly installed, and also deletes whatever was on the server.

When you stop sharing with a family member, they stop seeing your readings from that moment and their phone empties itself. If anything was saved outside the app on that phone — a screenshot, a PDF you sent them — that is theirs and only they can delete it.

If something went wrong

If unauthorized access to health data stored on the server ever happened, we would notify the affected people without delay and in accordance with the U.S. Federal Trade Commission's Health Breach Notification Rule, which requires notifying users, the FTC and, in some cases, the media.

Children

Mi Presión is not directed at children under 13 and we do not knowingly collect data from them.

Not a medical device

Mi Presión is not a medical device and does not replace your doctor's advice. The categories it shows follow general, indicative ranges; decisions about your health are made with your doctor.

Changes to this policy

If we change anything, we will update the date above and say so inside the app on the "About Mi Presión" screen. If a change affected how your data is stored, we would ask you again before applying it.