Block ads and trackers on your Mac
Add your key once. There’s nothing else to set up.
See it in 40 seconds
See what your computer has been up to
Most of this happens where you’d never notice it. NetSieve puts it on one screen, in plain words.
Know who’s behind the address
Tracker addresses are built to be unreadable. NetSieve tells you which company runs each one and what it does, so you can decide what to keep.
- googleads.g.doubleclick.netGoogle AdsAdvertisingBlocked
- app-measurement.comFirebase by GoogleTracks app useBlocked
- b.scorecardresearch.comScoreCard Research Beacon by comScoreTracks website visitsBlocked
- graph.instagram.comInstagram by MetaYour choice to block or allowAllowed
- rr7---sn-cnoa-jv3s.googlevideo.comYouTube by GoogleVideo and audioAllowed
Watch where your data goes
See which countries your apps connect to, and how much moved. NetSieve never reads what’s inside.
Example data. Locations are approximate and show where servers are.
One step to set up
Add your key
Paste it into NetSieve once. It changes one setting on your Mac and starts protecting you straight away.
Use your Mac as usual
Ads and known scam sites are stopped in your browser and your other apps.
Check in when you’re curious
If a site ever breaks, “A site isn’t working” finds the cause and lets you fix it.
Straight answers
- Your history stays on your MacIt’s kept for 7 days, and you can delete it anytime. Allowed lookups are sent, encrypted, to Cloudflare or Quad9 so sites can load.
- If it stops, your Mac recovers on its ownA separate safety check restarts NetSieve or puts your original settings back, usually within a minute.
- It can’t block everythingAds from the same site as the content, like YouTube video ads, still appear. So do apps that use their own private DNS.
- Your Mac only, for nowPhones and TVs need a setting changed by hand and depend on your Mac being on. Windows isn’t available yet.
Be first to try it
Leave your email and we’ll tell you when NetSieve is ready for your Mac.
We’ll only email you about NetSieve.