Know your average speed in Bulgaria's camera zones — before the fine.
About SrednaBG
SrednaBG is a maps & navigation app developed by demosten.com.
How many times has SrednaBG been downloaded?
SrednaBG has been downloaded 7 times. In the last 30 days, the app was downloaded 7 times.
What is the rating of SrednaBG?
SrednaBG has no ratings yet.
Is SrednaBG free?
SrednaBG is free to download. The APK download size is 61.08 MB. The latest version available is 1.0.4. The last update was on June 2, 2026.
What are the requirements for SrednaBG?
The app has a content rating of Everyone. The app has been available on Google Play 2 weeks ago.
Description
SrednaBG — Your real-time average in Bulgaria's average-speed zones
Bulgaria's average-speed cameras don't fine you for an instantaneous spike. They average your speed between two points and ticket you if that average exceeds the limit. Most navigation apps will warn you that a zone exists, but none of them tell you the one thing that actually matters: what your average is right now, and how fast you can still drive without getting fined.
SrednaBG fills that gap.
Please note: SrednaBG works only within Bulgaria. It covers Bulgaria's average-speed zones exclusively and has no data for other countries.
What it does As soon as you enter an average-speed zone, SrednaBG starts a precise average-speed calculation based on your GPS position and elapsed time. On a single, glanceable screen you see: • Your current speed • Your running average since the zone start • The maximum speed you can sustain for the remainder of the zone without exceeding the legal average • Distance and time remaining inside the zone • The posted speed limit for the zone
If your projected average is about to exceed the limit, the app warns you clearly and in time to do something about it.
Why it's different Unlike traditional speedometer or radar-warning apps: • It calculates the math that the camera actually does, not just a static speed reading • It tells you the highest safe speed for the rest of the zone, so you don't have to overcompensate by crawling • Zone data is sourced from official BG TOLL listings, cross-checked with TollTracker and verified against OpenStreetMap • It's offline-first: zones and the map work without a network connection
Built for daily driving in Bulgaria • Bulgaria-only by design — the app covers Bulgaria's average-speed zones and does not work in other countries • Offline map of Bulgaria included in the app — no roaming charges, no data costs • Adaptive GPS polling (frequent inside zones, relaxed elsewhere) to protect battery life • Audio alerts so you don't have to take your eyes off the road • Auto-stops tracking after a period of inactivity, so a session forgotten in the background won't drain your battery overnight • Interface in Bulgarian and English
Free, open-source, no ads, no tracking SrednaBG is released under the MIT license. The complete source code is public on GitHub. There are no ads, no analytics, and no account is required. The app never sends your location anywhere — all calculations run on your device.
Permissions • Location (foreground and background) — required to detect zone entry/exit and calculate average speed while the screen is off • Notifications — to show the ongoing tracking notification while the app runs in the background
Data accuracy and updates The zone database is refreshed automatically from official sources. Updates arrive as small data files — you don't need to update the app every time a new camera appears.
Feedback and bug reports The project is community-driven. Issues, suggestions and zone corrections are welcome on GitHub: https://github.com/demosten-com/SrednaBG
Recent changes: First public release of SrednaBG.
• Real-time running average speed inside Bulgaria's average-speed camera zones. • "Max now" indicator — the top speed you can drive for the rest of the zone without going over. • Color-coded status (green / amber / red). • Voice alerts in Bulgarian and English. • Fully offline: Bulgaria map and zone list bundled in the app.
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