Privacy Policy
This Privacy Policy explains how the GPS Fields Area Measure Map app (named GPS Field Area Measure & Map on the App Store) (the "App"), provided by XTEL Technology and Communication Joint Stock Company (XTEL., JSC) ("XTEL", "we", "us"), handles information.
In short: the App has no account and no server of ours. Your measurements, photos and files stay on your device and we never receive them. The App is free and shows ads; Google and our advertising partners receive device identifiers and usage information to show and measure ads, and Google Firebase helps us understand usage and fix crashes. Premium removes all ads.
1. Data that stays on your device
Location. Used while the App is open to show your position, record the boundary you walk in a "Measure with GPS" session, and guide you to saved points. During a GPS measurement that you start, recording continues with the screen off (Android shows a notification, iOS shows the location indicator) and stops when you pause, save or discard it. The App never asks for "Always" location access. Locations are stored only on your device and are never sent to us or to advertisers. You can turn location off in your device settings and still measure by tapping the map.
Camera and photos. The camera is used for AR measurement; images are processed on your device. Saved photos contain the location and time they were taken (EXIF), which is included when you share or save a photo. On iOS the App only adds images to your photo library when you choose to save one; it never reads your library.
Measurements, projects, settings and files. These are kept in the App's private storage, together with whether you have Premium. Files you import or export are processed on your device and go only where you choose to send them.
Address search. The text you search for is sent to the map provider (Google on Android, Apple on iOS) to find the place.
2. Ads
Ads are served by Google AdMob, which may pass ad requests to these partners ("mediation"): AppLovin, Meta Audience Network, Mintegral, Pangle, Unity Ads and Liftoff Monetize (Vungle). To show and measure ads and prevent fraud, they automatically collect device identifiers (the advertising ID or IDFA when allowed, app set ID or IDFV), your IP address (which gives an approximate location), device information, interactions with ads and the App, and diagnostic data. They never receive your measurements, measured locations, photos or files. Ads are limited to content suitable for general audiences. See how Google uses information from apps that use its services.
Your choices
- Consent (EEA, UK, Switzerland and US states where required): the App uses Google's User Messaging Platform to ask whether ads may be personalized and to let you opt out of the "sale" or "sharing" of personal information. The form is shown again when your choice expires or the partner list changes; to change it sooner, contact us. If you refuse, ads are still shown but are not personalized.
- iOS: the App asks before the IDFA is used for tracking. You can change this in Settings > Privacy & Security > Tracking.
- Android: you can reset or delete your advertising ID in your device's Ads settings.
- Premium: while active, the App shows no ads and makes no ad requests.
3. Analytics and crash reports
The App uses Google Firebase: Analytics (app-instance ID, advertising ID subject to your choices, approximate location, device information, screens opened, in-app purchase and ad events) to understand how the App and its ads are used; Crashlytics (crash details, device information, an installation ID) to fix bugs; and Remote Config (country, language, OS and App version) to adjust settings such as ad frequency without an update, or to ask you to update an unsupported version.
4. Purchases
Premium is bought through Google Play or the App Store, which handle payment. We never receive your name, email or card details; the App only learns what you own (product and purchase status) and keeps that on your device.
5. Other services
Maps, location, AR and purchases use Google services on Android (Google Maps Platform, Google Play services, ARCore, Google Play Billing — Google Privacy Policy, Google Maps Additional Terms) and Apple services on iOS (Apple Privacy Policy). All services in sections 2–5 process data under their own privacy policies.
6. Sharing
We do not sell or share your measurements, photos or files. The services above receive only the data described in this policy, directly from the App. In some US states, giving ad partners identifiers for personalized ads can count as a "sale" or "sharing", which you can opt out of (section 2).
7. Retention and deletion
Data on your device stays until you delete it in the App, clear the App's data (Android) or uninstall the App. It may also be in your own Google or iCloud device backup, which we cannot access. Data held by the services above is kept under their policies and our settings in them (for example, Crashlytics keeps crash reports for 90 days). Because we have no account or server, we cannot link that data to you; we can help you contact a provider.
8. Security
Data is kept in the App's private storage, protected by your device, and is sent over encrypted connections (HTTPS / TLS).
9. Children
The App is not directed at children under 13, and we do not knowingly collect their information.
10. Your rights
Depending on where you live (for example under the GDPR, US state laws or Vietnam's personal data protection law), you may have the right to access, correct or delete personal data, object to or restrict its use, withdraw consent and complain to a data protection authority. Most of these can be used in the App and your device settings as described above; for anything else, contact us.
11. Changes
We will post any update on this page with a new effective date.
12. Contact
XTEL Technology and Communication Joint Stock Company (XTEL., JSC)
Email: xteldeveloper@gmail.com