Privacy Policy
WattLens by LokiSec
Effective: 2026-06-19 · Publisher: LokiSec · Contact: privacy@lokisec.de
Our commitment
WattLens is built on the principle that your energy data is your own. This app is local-first, works entirely offline, and we collect zero personal data by default. Energy-usage patterns can reveal when you are home, so any meter credentials you enter are stored encrypted on your device and never leave your network.
What we collect
Nothing. WattLens stores all data locally on your device. There is no account, no cloud backup, and no tracking by default.
We do not collect:
- Your name, email, or contact information
- Your devices, tariffs, meter readings, or usage patterns
- Location data or device identifiers
- Telemetry, crash reports, or usage analytics (by default)
Data storage
All WattLens data is stored in app-private local storage on your device only. This data:
- Is never sent to LokiSec servers
- Is never shared with third parties
- Remains yours to delete at any time
- Is lost only if you uninstall the app or factory-reset your device
Optional features
Google Drive Sync (Optional)
If you choose to enable Google Drive sync, backups are stored in your own Google Drive account in a private appDataFolder that only this app can access. LokiSec does not operate any sync server and has no access to your synced data. Sync is entirely optional and the app works perfectly without it. You can disable sync at any time and delete your backup from Google Drive.
Optional LAN Meter Reading
If you add a meter endpoint (off by default), WattLens reads power and energy directly from a Shelly, Tasmota, ESPHome, or Home Assistant device on your own local network. The host and any token you supply are stored encrypted on your device, requests stay on your LAN, and nothing is sent to LokiSec.
Optional Affiliate Links
WattLens includes a single, non-intrusive "Recommended hardware" entry with optional affiliate links to energy-monitoring and TOU-aware smart plugs. Links are completely optional and never tracked by LokiSec.
Purchases
Some apps include in-app purchases (an optional support purchase or a one-time unlock). Payments are processed by Google Play; LokiSec receives only a confirmation that a purchase was made and collects no payment details or other personal data.
Permissions explained
| Permission | Why | Required? |
|---|---|---|
INTERNET | To read meter endpoints you configure on your own local network | No — off by default; manual reading entry works fully without it |
Data export and deletion
You always retain full control:
- Export your devices, tariffs, and readings as CSV or JSON via Settings → Export
- The file is written to your chosen location (Google Drive, local storage, etc.)
- Delete the app at any time to immediately remove all local data, including stored meter credentials
- If you've enabled Drive sync, delete the backup from your Google Drive separately
Legal compliance
GDPR: We collect no personal data. WattLens is not marketed to children, and we do not knowingly collect data from anyone under 13.
Security
All local data is stored in app-private storage with standard Android file permissions. If you enable Drive sync, encryption is handled by Google Drive. The app does not store passwords or credentials in plain text.
Changes to this policy
We may update this policy occasionally. The "Effective Date" at the top shows when it was last updated. Continued use of WattLens after changes constitutes acceptance of the updated policy.
Aufsichtsbehörde / Supervisory Authority
Die zuständige Aufsichtsbehörde für datenschutzrechtliche Beschwerden ist:
Bayerisches Landesamt für Datenschutzaufsicht (BayLDA)
Promenade 18, 91522 Ansbach, Deutschland
Telefon: +49 (0) 981 180093-0
E-Mail: poststelle@lda.bayern.de
Web: https://www.lda.bayern.de/
Beschwerden können auch bei jeder anderen Datenschutzaufsichtsbehörde in einem EU-Mitgliedstaat eingereicht werden, in dem der Betroffene seinen Wohnsitz hat.
The competent supervisory authority for data protection complaints is the Bavarian State Office for Data Protection Supervision (BayLDA). Complaints may also be filed with any other EU data protection authority where the data subject resides.
Questions or concerns?
- Privacy questions: privacy@lokisec.de
- General support: support@lokisec.de
- Publisher: LokiSec — Impressum
About LokiSec: LokiSec is an independent software publisher based in Germany. We build simple, privacy-respecting apps for Android. lokisec.de