SrednaBG
Bulgaria's average-speed zones
Only for iPhone
Free
iPhone
Know your average speed in Bulgaria's camera zones in real time — plus the max you can still safely drive. Voice alerts, per-vehicle limits, fully offline.
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.
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
• 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 never leaves 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.
Per-vehicle speed limits, more reliable voice alerts, and a steadier average-speed readout.
• Vehicle types: choose car, truck, bus, or motorcycle in Settings, and each zone's limit adjusts to match.
• Voice alerts now keep working with the screen off — they play reliably in the background, even after a call or Siri, and politely lower other audio instead of cutting it.
• Clearer spoken alerts: speeds are now read out naturally in both Bulgarian and English.
• Smoother lock-screen and Dynamic Island status that updates more reliably while you drive.
• More accurate zone tracking: steadier average-speed and "max now" values, with fewer false entering/exiting flips at zone edges.
• Home and Settings now stay in portrait so the display doesn't flip while your phone is mounted.
• Plus a range of stability and reliability fixes.
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
- 121.5 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