SrednaBG
Bulgaria's average-speed zones
Only for iPhone
Free
iPhone
Drive Bulgaria's average-speed zones with confidence. SrednaBG tracks your live running average and the maximum speed you can hold to the end of every zone — so you always know exactly how much room you have left.
Coverage area: Bulgaria only. SrednaBG does not detect average-speed zones outside Bulgaria.
WHAT IT DOES
When you enter an average-speed zone, SrednaBG starts calculating in real time:
• Your running average speed since the entry camera
• The maximum speed you can sustain for the rest of the zone and still finish under the limit
• Distance remaining to the exit camera
• A clear safe / watch / over status at a glance
WHY YOU NEED IT
Waze and most navigation apps will warn you that an average-speed zone is coming, but they stop there. Once you're inside, you're on your own — there's no way to know whether the speed you just held for two kilometres has left you any margin for the remaining four. SrednaBG closes that gap. It's the companion for anyone who already uses Waze, Apple Maps, or Google Maps in Bulgaria.
TRIP HISTORY
Every completed average-speed zone is saved on your phone. Open a trip to see your average, top and lowest speed, and a speed-over-time graph drawn against the zone limit, so you can see exactly where the margin went. Tap "Show on map" to see the zone you drove, coloured by how the pass ended. Records are kept for as long as you choose in Settings — off, 1, 3 or 6 months, with 3 as the default — and nothing ever leaves the phone.
FEATURES
• Live running-average speed for every average-speed zone in Bulgaria
• "Max-to-end" speed — the exact maximum you can drive to the exit camera and still finish under the limit
• Trip history with a per-zone speed graph, and a retention period you control
• Spoken alerts in Bulgarian and English — entry, limit, over-limit warnings and your final average, so you can keep your eyes on the road
• Per-vehicle speed limits — car/motorcycle, bus/minibus/with trailer, or truck — so each zone shows the limit that applies to you
• Offline maps powered by MapLibre — no data connection needed
• Live Activity on the Lock Screen and Dynamic Island, so you can glance at your average without unlocking the phone
• Adaptive GPS — 1-second updates inside a zone, slower when no zone is nearby, to preserve battery
• Auto-stop after a configurable period of inactivity (3 hours, 6 hours, or Never) so a forgotten background session won't drain your battery
• Bulgarian and English interface
• Ships with the full Bulgaria zone list; optional online updates keep it current
PRIVACY FIRST
• No ads, no analytics, no tracking, no third-party SDKs
• No account, no sign-up, no email required
• Your location and your trip history never leave your phone
• Open-source under the MIT license — every line is on GitHub for you to read
ABOUT THE DATA
SrednaBG uses the official zone list maintained by BG TOLL (the Bulgarian national toll agency), cross-referenced against community sources. The map is built from OpenStreetMap, packaged offline so it works everywhere — including mountain passes with no signal.
FREE FOREVER
No in-app purchases, no premium tier, no subscriptions, no upsells.
IMPORTANT
SrednaBG is a driver-assistance tool, not a substitute for safe driving. Always obey posted speed limits and follow traffic laws. The figures shown are best-effort estimates from GPS; the official tolerance and any enforcement decisions are entirely up to BG TOLL.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Trip history, a clearer picture of every zone you drive, and more accurate zone tracking.
• New: Trip history — every completed average-speed zone is saved on your phone. Browse the list, open a trip to see your average, top and lowest speed, and a speed-over-time graph with the zone limit. Choose how long records are kept in Settings (off / 1 / 3 / 6 months, default 3).
• New: "Show on map" — from any history record, jump to the map with that zone colored green or red by the result and the arrow placed at the zone start.
• New "Not measured" status: if the app starts mid-zone and never saw you enter, it says so plainly instead of showing you an average that cannot be trusted.
• More accurate zone tracking: no more false zone entry when driving on a nearby road that runs alongside a zone.
• Clearer vehicle types — the picker now names the whole licence class: Car/Motorcycle, Bus/Minibus/With trailer, Truck. Driving a car with a caravan? Pick the middle one.
• Updated offline map and zone list (now 76 zones), plus the zone count is shown in Settings next to the data date.
The developer, demosten.com, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stanimir Karoserov
- Size
- 123.8 MB
- Category
- Navigation
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English and Bulgarian
- Age Rating
4+
- 4+
- Copyright
- © 2026 Stanimir Karoserov
