NetMonster

Michal Mroček

Contains adsIn-app purchases

About this app

NetMonster collects, shows and stores information about nearby cell towers. Each tower has its unique set of identifiers and NetMonster will show you them. In select areas and countries precise locations are available.

All cells that your phone actively connected to are continuously saved into log till you terminate the app. You can manually correct the location, browse cells on the map, filter them and eventually export all the data.

NetMonster also visualises signal changes and provides short description what given measurement means and how it affects reception quality or theoretical maximal speed.

Supported networks are GSM, CDMA, WCDMA, TD-SCDMA, 4G LTE, 5G NSA and 5G SA. When it comes to LTE, NetMonster also detects aggregated carriers (so-called LTE-Advanced). For areas where 5G NSA is available you can see if NSA is in use or just deployed, carrier aggregation in 4G+5G NSA is also available.

NetMonster is based on open-source library NetMonster Core:
https://github.com/mroczis/netmonster-core

Want to get updates first? Join beta channel!
https://play.google.com/apps/testing/cz.mroczis.netmonster

Ratings and reviews

Hmmm... Privacy policy - "NetMonster does not contain advertisements". Update app - oh look, consent screen for targeted ads, followed by ads. Checks changelog for mention of ads - nothing. I'm not against ads as such, as long as they're not too dominant, but why all the secrecy? That aside, the app is great and does pretty much what you'd expect (very handy for checking bandwidth in use), except for cell locations which are - at best - eclectic.

NetMonster v3.1.1 is a smart and reliable app for anyone curious about mobile networks. It shows live data like signal strength, LTE bands, cell ID, and more in a clean layout. The app runs smoothly, uses minimal battery, and doesn’t need internet to function. Great for testing SIM performance or spotting weak signal zones. Even in areas with poor coverage, it helps pinpoint which tower you're connected to.

Indeed this this app is very good: it shows information on neighbor carriers and the aggregated carriers, which I have not found in any other similar app I tried. Thank you! The UI is pretty simple but works. It would be GREAT if it would also show the CQI for each used carrier. Also it would be helpful if it would also show the LTE/NR band numbers (such as: 5, or n5), currently it shows the frequency band, like AWS for LTE band 4, or 700 for LTE Band 13.

What’s new

⚡️ Drastic (!!!*) change in how you control the app—you'll either love it or hate it!
🤖 Added latest Android 16 features
✨ False-positive PSC and PCI changes detection
✨ Total bandwidth display if your phone supports cell-specific breakdown
✨ New PSC/PCI detection — now values are now yellow instead of red

* more exclamation marks available upon request