App privacy policy

Data controller

Your data stays on your device

The apps work without an account and without a server. Everything you enter (entries, goals, settings, history) is only saved in a local database on your device. This data is never sent to me and I have no access to it.

Deleting the app permanently deletes this data. It may be included in your device backups (iCloud or computer), which you manage with Apple under your own settings.

iCloud, if you want it. Some apps offer to keep their data in iCloud Keychain or to share it through iCloud with someone you choose. It is never turned on without you: the data then goes, encrypted, through Apple's servers under your Apple Account, and I have no access to it.

Apple Health, Apple Watch and notifications

Apple Health. If an app offers it and you allow it, it only reads or writes the types of data you approved in Apple Health. This happens on your device: health data is never sent to me, never used for advertising and never shared with anyone. You can withdraw this permission at any time in the Health app.

Apple Watch. Syncing between your iPhone and your watch goes directly from one device to the other, without any server in between.

Notifications. Reminders are scheduled locally on your device. No notification token is sent to any server.

Error reports (Sentry)

This is the only thing that leaves your device. When an app crashes or hits an error, it sends a technical report to Sentry, an error-monitoring service, so that I can understand the problem and fix it.

What a report contains. A description of the error and where it happened in the code, the app's latest technical logs, the device model, the iOS version and the app version. For a small share of sessions, a reconstruction of the screens may be attached, with all text and images masked.

What it does not contain. No name, e-mail address, account, advertising identifier, health data or content you entered. The IP address of your connection is the only personal data involved: it is needed to send the report and may be stored with it, without being used for anything else.

Sentry (Functional Software, Inc.) acts as a processor. Reports are hosted in the European Union, in Frankfurt (Germany), and kept for at most 90 days. As Sentry is a US company, any access from the United States is covered by the EU–US Data Privacy Framework and the European Commission’s standard contractual clauses.

This processing is based on my legitimate interest in keeping the apps working and stable (Article 6(1)(f) GDPR).

What the apps never do

They show no ads, use no analytics tools, do not track you across other apps or websites and build no profile. No data is sold, rented or handed over to anyone.

The apps are not specifically aimed at children and do not knowingly collect any data about them.

What the apps show (estimates, statistics, goals, programs) is for information only. It is not medical data: the apps are not medical devices, make no diagnosis and do not replace the advice of a health professional.

Your rights

You have the right to access, rectify, erase, restrict and object to the processing of your data, and to set instructions for what happens to it after your death. The data stored on your device is entirely under your control: deleting the app erases it. For any request about error reports, write to support@guicherd.dev; you will get an answer within one month. You can also lodge a complaint with the French data protection authority, the CNIL.

Changes

Should an app ever process other data, this page would be updated beforehand, along with the date above.