BeepLine - GPS Line Alarm

Spark Mind Software

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BeepLine – GPS Line Alarm helps you stay oriented by alerting you the moment you cross a specific geographic line — based on longitude or latitude. It’s a simple and lightweight tool that can be used in many real-life situations, from outdoor exploration to daily navigation.
Unlike classic geofencing apps that rely on circular zones and radius sizes, BeepLine works with linear boundaries. This offers greater precision in many use cases, especially when passing a specific street, a turning point, a shoreline, or a planned boundary during a walk, sail, or drive.
Main Features
• Set a longitude or latitude line as a virtual boundary
• Get notified instantly when you cross the line
• Choose between music, sound alarm, vibration, or both
• Works offline – ideal for remote or low-coverage areas
• Easy-to-use interface, no login or unnecessary permissions
Example Use Cases
• Exploring new areas – know when you've gone beyond a desired perimeter
• Urban walking – receive a signal at the right street for turning
• Meeting someone outdoors – set a line to know when someone enters a zone
• Kayaking or sailing – track crossings between islands or across rivers
• Fishing – monitor entry into or exit from a fishing boundary
• Avoiding traffic – alert yourself when reaching a street to turn away from congestion
• Accessibility support – alert at critical waypoints for visually impaired sers
• Define linear boundaries of a sector and get alerted when you cross them.
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BeepLine is also useful for parents walking with children, for campers marking a border, or for city dwellers who want a minimal GPS-based helper to avoid missing an important point on their route.
Privacy-first
BeepLine does not track or store your location. All processing is done on-device. No accounts, no data collection, no ads.
The application uses OpenStreetMap (ODbL) maps via the osmdroid library.
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Want to make sure you never miss the right point?
Try BeepLine and cross lines on your terms.