Privacy Policy

Overview

All calculations — solar time, sunrise, sunset — happen on your device using publicly available astronomical formulas (NOAA Solar Algorithm). No data is ever sent to us. The app makes network requests to two public services only when you search for a city or type in coordinates.

Location Data

TrueTime uses your device's GPS to calculate the sun's position where you are. Your GPS position:

• Never leaves your device
• Is stored only in your device's local storage
• Is used solely for solar time calculations
• Is never shared with us or any third party
• Can be cleared at any time by removing the app

TrueTime only asks for location while you are using the app. It does not track your location in the background.

You may deny location permission. In that case, TrueTime will ask you to search for your city or enter coordinates.

City Search and Time Zones

If you choose a city instead of using GPS, two public services are used:

• City search: the text you type is sent to Photon, an open-source geocoding service by Komoot, which returns matching places and their coordinates.
• Time zone lookup: when you pick a city or enter coordinates, those coordinates, rounded to about 1 km, are sent once to timeapi.io to find that place's time zone (for example "Europe/Paris"). This is how TrueTime shows sunrise and sunset in the city's own clock time.

Neither service needs an account, and TrueTime sends them no name, email or device identifier. Like any website, they receive your IP address with the request. Their own privacy policies apply. After that one lookup, all calculations for the city are done offline on your device, including daylight-saving changes.

Analytics & Advertising

TrueTime contains:

• No analytics SDKs
• No advertising networks
• No crash reporting services
• No third-party tracking of any kind

We have no visibility into how you use the app. If something goes wrong, the app keeps a short error log on your device. It is only shared if you choose to send it to us from Settings → Diagnostics.

Home Screen & Lock Screen Widgets

TrueTime widgets show solar time on your home screen, lock screen and in StandBy. Widgets read sunrise and sunset times the app has already stored on your device. They make no network requests and collect no data.

Children's Privacy

TrueTime does not knowingly collect any information from children under 13. The app asks for no personal information from anyone.

Changes to This Policy

If this policy changes, we will update the date at the top of this page. Continued use of the app constitutes acceptance of any updated policy.