SrednaBG is a free, open-source mobile application designed for use in Bulgaria that helps drivers monitor their average speed while traveling through designated zones. The app provides real-time feedback on whether the user's speed is within the limit, approaching the threshold, or exceeding it, using a color-coded system of green, amber, and red indicators. Voice alerts are included to notify drivers of their current status, aiming to keep them informed and potentially prevent speeding violations.
The tool operates fully offline, ensuring that all location data remains on the user's device and never leaves the phone. SrednaBG can be used alongside navigation tools such as Waze or as a standalone solution. Users can browse every monitored zone in Bulgaria and view a live map while inside a zone. The app offers a dashboard interface and supports settings in both Bulgarian and English, catering to a broader range of users within the country. An Android Auto preview is mentioned as coming soon, indicating planned integration with in-car systems.
SrednaBG emphasizes privacy, with no cookies, trackers, accounts, emails, signups, advertisements, or in-app purchases. There are no third-party SDKs, and the service is explicitly stated to be free forever. The application is distributed under the MIT License, and its source code is available on GitHub for review, building, or forking. Users can download SrednaBG from the App Store for iPhone, Google Play for Android devices, F-Droid for open-source distribution, or directly sideload the APK from GitHub.
As a speed monitoring tool tailored specifically for Bulgarian roads, SrednaBG addresses the need for drivers to remain aware of their average speed in camera-monitored zones, promoting safer driving and compliance with local regulations.
SrednaBG is a Travel, maps & navigation product. It helps Bulgarian drivers monitor and stay within average speed limits to avoid fines. It is built as an open-source project for drivers in Bulgaria. SrednaBG is open source under the MIT license. The product ships for the web, Android, and iOS.
demosten.com builds and maintains SrednaBG, and the product first shipped in 2026. Development happens publicly on GitHub with 61 commits in the last 90 days. Key capabilities include average speed tracking, voice alerts, and offline mode. The interface is available in Bulgarian and English.
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