The honest answers.
Will this get me banned?
No — and that's the whole point. It doesn't inject anything into the game or read its memory. It only changes the same settings you could set yourself in League's Options menu (hide chat, mute ping sounds, mute emotes), through Riot's own local client API — the same kind apps like Blitz and Porofessor use. There's nothing for the Vanguard anti-cheat to object to. The optional champ-select heads-up message is a normal chat post through that same API, and you can switch it off from the tray.
Windows says the download is "suspicious" or blocks it — is it safe?
Yes, it's safe. That warning (Microsoft SmartScreen / your antivirus) appears because the app is brand-new and not yet code-signed — a signing certificate is costly for a free tool. It doesn't inject input or touch game memory; it only changes your own League settings. To run it: in the browser download, click the … menu → Keep; then on SmartScreen click More info → Run anyway. The warning fades as more people download it, and we're finishing code signing to remove it entirely.
Does it mute pings?
It mutes the sound of pings (and hides all chat, and mutes enemy emotes). It can't remove the visual ping markers from the map — no external tool can do that safely, because the only way is a command Riot's Vanguard anti-cheat blocks apps from sending. So you won't hear the spam, but the little markers still appear on screen.
Is it really free?
Completely. The app is free and open. This site is supported by ads so we can keep it that way.
How do I turn it off or uninstall it?
Right-click the tray icon to toggle any feature or quit. To remove it entirely: quit from the tray, untick "Start with Windows", and delete the folder %LOCALAPPDATA%\IMuteYouAll.
Does it collect any data?
Almost none. It sends one anonymous heartbeat — a random ID and the app version — so we can count how many people use it. No personal data, no account info, no game or chat data, and your IP is never stored. You can turn it off anytime from the tray (right-click → "Share anonymous usage stats"). Everything else stays entirely on your PC.