Your carrier says you have 5G. Your video keeps buffering. Who's right? CellMap puts the truth on a map.

Whether you're tired of dropped calls in your apartment, want to know which SIM actually performs better or you're driving cross-country and want to see exactly where coverage fell apart — CellMap is the tool that turns "my internet feels slow" into real numbers, real locations and real answers.

SEE YOUR COVERAGE, EVERYWHERE YOU GO
Every speed test and ping you run gets pinned to the map with a color that actually means something — green when your network is flying, red when it's struggling. Turn on drive-test mode and app quietly logs a point every time you move, even with the app closed, building a personal coverage map of everywhere you go. No other app does this from your own real-world data.

REAL SPEED TESTS. NOT ESTIMATES.
CellMap downloads and uploads actual bytes over your live connection and measures how fast they move. You get download speed, upload speed and a clean animated gauge that updates in real time as the test runs. No gimmicks, no made-up numbers.

PING TEST THAT ACTUALLY PINGS
This isn't a fake latency estimate. App sends real ICMP echo requests — the same thing your Mac's Terminal does when you type ping — and gives you min, avg, max, jitter and packet loss across 10 packets. Choose between Cloudflare (1.1.1.1), Google (8.8.8.8), or Quad9 (9.9.9.9).

DUAL-SIM CARRIER COMPARISON
Have two SIMs or an eSIM? App shows both active lines side by side with their current radio generation. And over time as you log more measurements a carrier ranking builds up automatically — so you can see with your own data which carrier actually performs better at the places you care about, not the places carriers put in their ads.

BACKGROUND DRIVE-TEST LOGGING
Enable it once, drive anywhere, open the app later. CellMap will have logged coverage points the whole time — pinging the network quietly as you move, tagging each point to your exact location. Great for road trips, commutes or finding out once and for all where your signal disappears on the way to work.

EXPORT EVERYTHING
Every measurement you've ever taken exports to a clean CSV file in one tap — open in Excel, Numbers or Sheets.

BEAUTIFUL AND HONEST
CellMap is upfront about what iOS lets apps measure and what it doesn't. It won't show you fake signal bars — Apple doesn't give third-party apps access to raw signal strength so no app that claims otherwise is being straight with you. What app shows is what it actually measured: real throughput, real latency, real location. That honesty is the whole point.

Perfect for:
— Remote workers who need to know if a coffee shop or Airbnb will actually support a video call
— People switching carriers and wanting real proof of which is better
— Road trippers and van lifers mapping coverage before they go off-grid
— Anyone who's ever said "my internet is terrible here" and wanted to prove it.

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