You open a free speedometer app expecting one simple job: show your speed. Too often, it is doing a lot more than that. It is collecting location, building a record of where you drive, and feeding that data into ad and analytics systems.
That is not paranoia. It is a common mobile app business model. While you are focused on the road, the app is focused on monetizing your movement.
Why This Matters for Automotive Enthusiasts
Location data is sensitive for anyone, but it is especially revealing for car people. A speedometer app can expose your commute, your home and work patterns, the roads you favor, and where you spend weekends. If you use it at track days, meets, or off-road events, it can also reveal exactly when and where you show up.
That matters because telematics and driving apps often collect speed, routes, and time-of-day data that can be shared with third parties, including insurers, as CarInsurance.com explains. And if an app vendor gets breached, your route history and driving habits are suddenly someone else’s problem too.
The economics are straightforward: the app looks free, your data becomes the product, and the real payment is your privacy.
The FTC has repeatedly raised concerns about this kind of commercial surveillance, including location-data cases like FTC v. Kochava.
The Real-Time Bidding Problem
Even when an app says it does not “sell” your data, it may still share it through Real-Time Bidding. When an ad loads, a bid request can broadcast information like device identifiers, IP address, and location to a large ad-tech chain in milliseconds, as outlined by TrustArc.
That is the core problem. Your data can be sprayed across a market of intermediaries, not just handed to one company. Privacy International has described RTB as one of the largest and most opaque surveillance systems in existence.
From a user perspective, the “use” versus “sell” distinction does not do much. If your data gets shared widely enough to build a profile on you, the practical result is the same.
The Privacy-First Alternative
This is exactly why I built eyeSpeed differently. It is one of very few speedometer apps with a “Data Not Collected” App Store label. Speed is calculated on-device. Your location does not leave your phone. There is no cloud route history, no ad-tech pipeline, and no third-party handoff.
I also chose a one-time purchase instead of ads or subscriptions. That keeps the business model honest. You pay for the app, not with your location.
If you are comparing speedometer apps, check the App Store privacy label first. Read the privacy policy. Be skeptical of ad-supported apps. And remember that “free” usually means somebody still has to pay.
Driving It Home
Your driving data is valuable. That is exactly why so many apps want it.
If you care about privacy, look for a speedometer that treats location as a live input, not a business asset. You should not have to trade your route history just to see your speed.