See
Live, per-app bandwidth, sorted by who's eating the most right now. No more guessing which background process is hammering your tether.
Block, monitor, and cap any app's network access, all on-device. No subscription.

Most Mac firewalls stop at "block this connection". DataCever goes further, it measures exactly which app burned which megabytes, then puts a hard cap on it.
Live, per-app bandwidth, sorted by who's eating the most right now. No more guessing which background process is hammering your tether.
One toggle stops an app from touching the network, system processes included. The block stays in effect on-device until you turn it off.
Set a per-app data quota. When it's hit, DataCever cuts that app's network until you reset the session
| Product | Per-app monitor | Per-app block | Per-app quota | Mac App Store | Price |
|---|---|---|---|---|---|
| DataCever | ✓ | ✓ | ✓ | ✓ | $6.99 one-time |
| Little Snitch | ✓ | ✓ | — | — | $59 |
| LuLu | basic | ✓ | — | — | Free |
| TripMode | ✓ | ✓ | — | ✓ | $50 |
| Radio Silence | basic | ✓ | — | — | $9 |
Distributed via the Mac App Store: no system-extension trust dialog, no kext, no installer that asks for root. Click install, click open.
Your traffic never leaves your Mac. No server-side inspection. No traffic-routing VPN.
Sandboxed, signed, and reviewed by Apple. Approve the network extension once, on first launch.
One purchase. No recurring charges.
DataCever runs entirely on your Mac. There are no DataCever servers your packets touch. Read the privacy policy.
"It has completely transformed the way I handle and organize my traffic. The app is incredibly intuitive and user-friendly, making it easy for anyone to get started, regardless of their technical expertise."
"Works as described and does what is needed."
Pay once, then it's yours. Updates included on this major version.