The short version: Everything you log in this app — your symptoms, intensities, notes, and dates — stays on your device. We never see it, it is never uploaded, and there is no account to create. The only data anyone receives is anonymous crash and usage information that helps us keep the app working, plus the subscription details needed to process a purchase.
This app is operated by Mentalmetal ("we", "us"). If you have any questions about this policy or your privacy, contact us at support@mentalmetal.app.
The symptoms you log — including symptom type, intensity, time, any notes you add, and your cycle entries — are stored locally on your phone. This information is not collected by us, not transmitted off your device, and not stored on any server. You do not create an account, and we cannot access your health information.
You can export a backup of this data yourself at any time. That backup file belongs to you and is shared only if and where you choose to share it. Deleting the app removes the locally stored data from your device.
To keep the app stable and understand how it is used, a small amount of anonymous information is processed by the trusted services below. None of it includes the symptoms or notes you log, and none of it identifies you personally.
| Service | What it processes | Why |
|---|---|---|
| Sentry (crash reporting) | Diagnostic data when the app crashes or errors: device model, operating system version, app version, and the technical stack trace. Configured so that no symptom data or personal notes are ever included. | To detect and fix crashes and bugs. |
| Aptabase (usage analytics) | Anonymous, aggregated usage events (for example, that the app was opened or a symptom was logged). No names, no accounts, no advertising identifiers, and no tracking across other apps or websites. | To understand which features are used so we can improve the app. |
| RevenueCat + Apple / Google | If you buy a subscription: your subscription status, an anonymous app-assigned identifier, and purchase/receipt information. Payment itself is handled by Apple or Google — we never see your card details. | To process and restore your subscription. |
These providers process data under their own privacy policies: Sentry, Aptabase, RevenueCat, Apple, and Google. As these are global services, the limited data described above may be processed on servers outside Australia, including in the United States and the European Union.
We do not sell your data. We do not share your health information with anyone. We do not show advertising, and we do not use advertising or cross-app tracking identifiers.
Because your health data lives only on your device, you are in direct control of it: you can export it, and you can delete it by removing the app. For the anonymous diagnostic and usage data, and for subscription data held by our providers, you may contact us at support@mentalmetal.app to ask about access or deletion. Depending on where you live, you may have rights under laws such as the Australian Privacy Act, the EU General Data Protection Regulation (GDPR), or the California Consumer Privacy Act (CCPA); we will honour applicable requests.
This app is intended for adults and is not directed at children. We do not knowingly collect information from children under 16.
If we change how the app handles data, we will update this page and revise the "Last updated" date above.
This app is a personal tracking tool to help you record symptoms and share a summary with your healthcare provider. It does not provide medical advice, diagnosis, or treatment.