Demarc Network Firewall

Ever wonder what your apps are really doing behind your back? Demarc shows you, live, right on your phone. No root needed. This app uses Android's VpnService to see your network traffic. Demarc does not create a real VPN connection or send your data anywhere. It uses this permission only so Android will let it inspect your traffic locally, then it sends everything straight back out to the internet as normal. This is what makes it possible to see which app is making each connection. See exactly what's happening: - Which apps are connecting to the internet, and where they're going - Every website your apps look up - How much data each app uses, updated in real time Everything stays on your phone. Demarc never sends your data anywhere except back out to the internet as it normally would. There is no remote server, no account, and no tunnel to anywhere else. - Live connections for every app - Website lookup tracking - Data usage totals, per app and overall - Simple on/off monitoring, plus a quick settings shortcut - Deep dive into any single app's activity - See exactly which website an app is talking to, even over secure connections - Save your network activity to a file for closer inspection - See which country and network each connection goes to Take control: - Block any app from using Wi-Fi, mobile data, or both - Block ads, trackers, and known malware sources automatically - Set custom rules for exactly which apps can connect, when, and where - One-tap lockdown to instantly cut off all network activity Stay alert: - Get notified if an app contacts a known unsafe server - Automatic detection of suspicious behavior, like apps quietly phoning home - A clear report of what happened while you weren't looking YOUR PRIVACY, GUARANTEED Demarc's use of VpnService is strictly local. Nothing you see in Demarc ever leaves your phone except the traffic itself, which goes right back out to the internet as it normally would. No servers, no accounts, no hidden uploads. The only exceptions are two optional features you can turn on yourself: downloading a list of known bad websites, and looking up which country a connection goes to. Demarc never reads the contents of your messages or encrypted traffic. It only sees where your data is going, not what's inside it. GOOD TO KNOW - Because Demarc uses VpnService, it can't run at the same time as another VPN app - Works on Android 10 and up - Some blocking methods have limits, since not every type of traffic can be fully inspected - Alerts are based on patterns, not certainties. Trust your judgment alongside them Demarc puts you back in control of your phone's network, showing you what's really happening and letting you decide what gets through.