About FatGPS
FatGPS is an independent publication about GPS technology, how it works, how to use it well, and which products actually earn their price. We also build small web tools that help readers apply what they learn without installing an app.
Why we exist
Search results for "GPS tracker" are dominated by affiliate farms and AI-generated summaries that all say the same thing. We started FatGPS because the topic deserves better, real testing, honest comparisons, and explanations that do not assume the reader is a specialist.
What you can find here
- Phone locator, our flagship tool, lookup a phone by number using GPS triangulation and cell-tower data.
- GPS for cars, pets, and wearables, buying guides, install walkthroughs, product comparisons.
- How GPS works, evergreen technical explanations written for curious non-specialists.
- Legal and privacy, what is and is not allowed when tracking another person or device.
Our independence
Some of our reviews include affiliate links; we disclose this on every page that contains one. Affiliate relationships never influence our opinion, and we regularly recommend products we do not have an affiliate deal for. Read more in our publishing principles.
About the author
Martin Pavlič is an independent web developer from Slovakia. He has worked on phone localization since 2010, before Find My iPhone (2010) and Google Find My Device (2013) even existed.
Back then he built one of the first sites that demonstrated the concept of GPS phone-number lookup, originally as a prank and an educational experiment. The site had a different name; what runs there today is a different project entirely. fatgps.com grew out of years of hands-on experience with this topic.
The site combines two worlds. On one side, a prank locator for jokes between friends (enter a number, send the link, your friend sees the "lookup" and an animated reveal). On the other, editorial coverage of real localization: how Find My, Google Find My Device, IMEI tracking and Bluetooth trackers actually work, when nothing can be done, and where privacy ends and stalking begins.
The guides take an ethics-first approach. No commercial stalkerware recommendations. No stealth-monitoring tutorials. Instead: how to spot that someone is tracking you, how to push back, and where to get help. Every locale carries the helplines for domestic-abuse victims and crisis lines that match the reader's country.
The site is a long-term project. It is not owned by a company, has no investors, and does not sell spy-app affiliate links.
Get in touch
Tip, question, correction or partnership idea? Reach us via the contact page.