Hi Product Hunt! I'm Vincent, the maker of NetCurb. A Mac connected to a phone hotspot can keep syncing, downloading, and backing up as though data were unlimited. NetCurb gives you a way to see which apps are using that connection and decide what can wait. You can: • Monitor uploads and downloads by app. • Block an app's internet access or give it temporary access. • Set daily, weekly, monthly, or never-reset data allowances. • Use different profiles for home, work, and travel. • Review usage history and export it as CSV. Monitoring, manual blocking, history, and data limits for one app are free. Pro is a one-time purchase that unlocks limits for additional apps, with no subscription. Settings and aggregate usage stay on your Mac. NetCurb doesn't record traffic content, destinations, or browsing history, and doesn't require an account. NetCurb requires macOS 26+ and approval for its network extension. It measures this Mac's usage, not your carrier's remaining balance; periodic measurements mean data limits can overrun. I'd love to hear how you manage limited connections on your Mac, and which apps you most want to keep under control.

NetCurb: Mac Data monitoring

Stop Mac apps from burning through your hotspot data

Stop Mac apps from burning through your hotspot data