Privacy Policy
Last updated: 14 August 2026
Barometra keeps your journal on your phone. There is no account, no sign-in, and no server of ours for your data to sit on. This page describes exactly what the app does and does not send, and to whom.
What stays on your phone
Everything you record is written to a database inside the app's own storage on your device and is never transmitted to us:
- How you felt each day, and any symptoms you tapped.
- Context you add — medication taken, a short night, a stressful day, and so on.
- Free-text notes you write.
- Your chosen city, symptom list, units, and notification preferences.
- The weather history the app caches, and the pattern profile it derives from your log.
We cannot read any of it. Deleting the app deletes all of it. If you have iPhone backups enabled, this data is included in your own device backup, encrypted under your Apple ID and governed by Apple's privacy policy — not by us.
What leaves your phone
Four things, and nothing else:
| What is sent | Where it goes | Why |
|---|---|---|
| Approximate coordinates for your chosen city, deliberately rounded to two decimal places (roughly one kilometre) | Open-Meteo | To fetch the forecast, and air quality or pollen if you enable them |
| The text you type when searching for a city, plus your language | Open-Meteo geocoding | To turn a place name into coordinates |
| Nothing about you — a plain request for a public forecast | NOAA Space Weather Prediction Center | Geomagnetic (Kp) data, only if you switch that factor on |
| Purchase receipt, an anonymous app-user identifier, device and store metadata | Apple and RevenueCat | To sell and restore the one-time Full Version purchase |
Your health log is never part of any of this
Symptoms, moods, notes and context never appear in a network request. The forecast request contains a location and nothing about you; the purchase request contains a receipt and nothing about your health.
Location
Barometra never asks for the iOS location permission and never reads your device location. You choose a city by name. Because weather moves across whole regions, the coordinates we send are rounded before they leave the device, so the request identifies an area of about a kilometre rather than a precise position.
Notifications
The evening outlook and sharp-change alerts are scheduled locally by your iPhone from the forecast already stored on the device. There is no push server, and no notification content passes through us.
What we do not do
- No accounts, no sign-in, no email collection.
- No analytics, crash reporting, or usage tracking of any kind.
- No advertising, and no ad identifiers.
- No tracking across apps or websites, and no data sold or shared with data brokers.
- No Apple Health / HealthKit access.
Third parties
- Open-Meteo — weather, air quality and geocoding.
- NOAA SWPC — public space weather data.
- RevenueCat — purchase validation and restore.
- Apple — the App Store transaction itself.
These providers process the requests described above under their own privacy policies. We receive no personal data back from any of them.
Retention and deletion
Your journal stays on your device for as long as you keep the app. Because we hold no copy, deleting Barometra deletes everything — there is nothing for us to erase on request, and nothing to export from a server. Purchase records held by Apple and RevenueCat follow their own retention rules.
Your rights
If you are in the EU, UK, or a US state with comparable law, you have rights of access, correction, deletion, portability, and objection over personal data a company holds about you. We hold none, so those rights are satisfied by the app itself: the data is in your hands on your own device. For purchase records, contact Apple or RevenueCat directly. You are welcome to write to us with any question at barometra.team@gmail.com, and you may complain to your local data protection authority.
Children
Barometra is not directed to children under 13 (or the equivalent age in your country) and we do not knowingly process their data.
Not a medical service
Barometra is a wellness app, not a medical device. It shows associations in your own log alongside public weather data. It does not diagnose, treat, or predict illness. Talk to a doctor about symptoms that are severe, new, or worrying.
Who we are, and how to reach us
Barometra is made and published by Alevtyna Kasirotska, an independent developer, who is the data controller for the limited processing described below. The way to reach her — including for any data protection question — is barometra.team@gmail.com, and a postal address is available on request.
Changes
If this policy changes, the date at the top changes with it, and material changes will be noted in the app's release notes.