Last updated: June 29, 2026
Summary
EV vs gas trip-cost comparison using device movement, route, speed, and configured vehicle assumptions.
SunMarc does not collect, store, sell, or share your trip history, routes, location traces, or vehicle settings.
Data we collect
SunMarc does not ask you to create an account for WattSave: EV vs Gas Costs and does not collect personal information directly through this app on SunMarc-operated servers.
Local processing and local data
- Trip calculations, configured prices, and vehicle assumptions are handled in the app experience.
- SunMarc does not operate a server that stores your trips, routes, or driving profile.
App permissions and device features
- Location and motion sensor signals may be used to estimate speed, route behavior, elevation effects, and trip energy usage.
- Network access may be used for ads and normal app connectivity.
Advertising, purchases, and third parties
Free and ad-supported.
When ads are shown, third-party advertising partners such as Google may process limited device, app, and advertising data to serve, limit, and measure ads. SunMarc does not sell your personal data and does not receive personal profiles from ad partners.
Google Play, Android, device manufacturers, ad networks, billing providers, or other third-party services may process data under their own privacy policies and platform controls when their services are used.
Data sharing
SunMarc does not sell your personal data. SunMarc does not share app-created personal files, local history, local settings, or local gameplay/calculation data from WattSave: EV vs Gas Costs with SunMarc servers.
Data retention and deletion
Because the app data described above is stored locally on your device, you can delete it by using in-app delete/clear controls where available, clearing the app data through Android settings, or uninstalling the app. Data processed by third-party services is controlled by those services and your platform settings.
Children
WattSave: EV vs Gas Costs is not designed to collect personal information from children on SunMarc servers. If you believe a child has provided personal data to SunMarc, contact us so we can review the request.
Important notes
WattSave is an informational calculator and does not provide financial, safety, or navigation advice.
Contact
If you have questions about this privacy policy, contact us at sunmarcs@gmail.com.