Helios Solar Monitor ("the App", "we", "us") is a solar production planning and forecasting application. This Privacy Policy explains what data the App processes and how. We designed Helios Solar Monitor to be privacy-first: your data stays on your device, and we do not operate any account system or analytics backend that profiles you.
1. Data We Process
Installation (facility) data you enter — name, geographic coordinates (latitude/longitude), province/district/address, panel type, panel count, tilt and azimuth angles, usage type, and production records.
Location data — if you tap "Use my location", the App reads your device's current location (precise) once to place a map pin. You can always set the location manually by tapping the map or searching an address instead.
All of the above is stored locally on your device (Apple SwiftData) and, for the home-screen widget, in a shared app group on your device. We do not upload this data to any server operated by us.
2. Third-Party Services
To calculate solar production and weather forecasts, the App sends the coordinates of your installation (not your identity) to the following third-party services:
| Service | Provider | Purpose |
|---|---|---|
| Open-Meteo | open-meteo.com | Weather & irradiance forecast |
| Open-Meteo Air Quality | open-meteo.com | Dust/soiling estimation |
| NASA POWER | power.larc.nasa.gov (NASA) | Long-term climate averages |
| PVGIS | re.jrc.ec.europa.eu (EU JRC) | Tilt/azimuth PV estimation |
| Forecast.Solar | forecast.solar | PV production forecast |
| Apple Maps / Geocoding | Apple | Map display, address search, reverse geocoding |
These requests contain only coordinates and technical parameters. They are not linked to any personal identifier. Please review each provider's own privacy policy for how they handle requests.
3. Subscriptions
Premium features are offered via auto-renewing subscriptions processed by Apple (StoreKit / App Store). We do not receive or store your payment information. Apple handles all billing; see Apple's Privacy Policy.
4. Tracking & Advertising
Helios Solar Monitor does not track you, does not include third-party advertising SDKs, and does not sell your data. The App Tracking Transparency framework is not used because we perform no cross-app tracking.
5. Data Retention & Deletion
Because your data is stored only on your device, you remain in full control:
- Delete an installation at any time from within the App.
- Use Settings → Data & Privacy → Delete All Data to erase all locally stored data.
- Deleting the App from your device removes all associated data.
6. Your Rights (GDPR / KVKK)
If you are in the EU (GDPR) or Türkiye (KVKK 6698), you have the right to access, rectify, and erase your data. Since we hold no copy of your data on our servers, you can exercise these rights directly on your device. For questions, contact us below.
7. Children
Helios Solar Monitor is intended for general audiences and is not directed at children under 13.
8. Changes
We may update this policy; the "Last updated" date will change accordingly. Material changes will be surfaced in the App.
9. Contact
Questions about this policy: mehmetdalgin@gmail.com