SpeedGuardian Pro// FAQ
Is SpeedGuardian Pro a radar detector?
No. SpeedGuardian Pro contains no radar or laser detection and no police-location features. It shows you the posted speed limit — public road-sign information — and previews the speed zones ahead on your route. The goal is a clean record, not evasion.
Where does the speed limit data come from?
Professional map data from HERE Technologies — the same class of data many built-in car navigation systems use — with OpenStreetMap as a fallback on rural roads. When no data exists for a road, the app shows '--' and stays quiet rather than guessing.
How accurate is it?
Strong on highways and in metro areas; honest about gaps on rural roads, in construction zones, and in school zones with time-of-day limits. When the app and a posted sign disagree, the posted sign is always right — the app tells you this too.
What happens to my location data?
It stays on your phone. Limit lookups send coordinates to the map provider for the lookup only — no identity attached, nothing stored by us. Driving events for your weekly report live on the device and are deleted when you delete the app. No account, no ads, no third-party analytics.
Does it work while I'm using other apps — Spotify, Google Maps, phone calls?
Yes. SpeedGuardian Pro runs in the background: alerts fire with the screen off, the phone locked, or any other app in front — Google Maps, Waze, Spotify, whatever. Voice alerts duck your music for a moment and never interrupt phone calls, and they play through your car's speakers over Bluetooth or CarPlay audio.
Does it work with CarPlay?
The CarPlay screen app ships in v1.1 — Apple gates CarPlay behind a special entitlement with its own approval process, and our request is in. Meanwhile v1.0 already speaks alerts through your CarPlay audio while other CarPlay apps are on screen; a dash mount gives you the visual.
Does it work outside the United States?
Yes — worldwide from day one. We verified live posted-limit coverage in the UK, Germany, France, Canada, Australia, Japan, and Mexico, alongside deep US coverage including rural highways. The app follows your device's units automatically (km/h in metric countries, mph in the US) and you can override either way in Settings.
Can I control how often it talks?
Completely. Set your over-limit threshold (0, 5, 10, or 15 over), toggle spoken limits on or off, or set zone announcements to 'drops only' — so it stays quiet through routine changes and only speaks up for sudden drops of 10, 15, or 20+ mph, the small-town-ambush case. Voice-only mode flips it the other way: all voice, no screen.
Can I use it for my teen driver?
Yes — Family Sharing covers up to six family members on one subscription. Set the alert threshold together as a family agreement, and use the weekly report as a coaching tool. The teen sees the same data you do; it's a shared standard, not surveillance.
Does it drain my battery?
It uses the same navigation-grade location mode as maps apps. Expect battery usage comparable to running turn-by-turn navigation. A car charger or mount with power is recommended for long drives, same as any nav app.
Is there an Android version?
Not yet. SpeedGuardian Pro is iPhone-first (iOS 18 and later). Android is on the roadmap after CarPlay ships.
How do I cancel?
Through Apple, in about ten seconds: Settings → your Apple ID → Subscriptions → SpeedGuardian Pro → Cancel. If you cancel during the 7-day trial at least 24 hours before it ends, you pay nothing.
What about refunds?
Purchases are billed and refunded by Apple under standard App Store policy — request a refund at reportaproblem.apple.com. If something's wrong with the app itself, email support@makemoremarbles.com and a human will read it.
Something else — or a feature you wish existed? We read every idea. Email support@makemoremarbles.com.