The best free data usage monitor for Mac

Updated October 23, 2026

Short answer

For tracking how much data you use on each network, with daily and monthly history, Byter is free and made for it. TripMode is best for blocking apps from using data, and iStat Menus or Stats are best for general system monitoring.

If your data is limited, you want two things: to know how much you’ve used, and to know which network it went through. Here’s how the main options compare.

AppBest forPrice
ByterData usage per network (Wi‑Fi, hotspot, Ethernet), history, live speed and speed tests in the menu barFree
Activity MonitorSeeing which apps used data since the last restartBuilt in
TripModeBlocking apps from using data on a hotspotPaid
iStat MenusDetailed system stats: CPU, memory, networkPaid
StatsOpen-source system monitor for the menu barFree

Why Byter

Byter is built for people who pay for data. It counts usage on every network separately, so your free office Wi‑Fi doesn’t hide what your phone hotspot used. History goes from the last 30 minutes to a full year, and your live speed and a one-click speed test are in the same place.

When to use something else

If you want to stop specific apps from using data at all, TripMode does that well, and it works alongside Byter. If you mainly want CPU, memory and temperature stats, iStat Menus or Stats are better fits.

Questions

What is the best free app to monitor data usage on Mac?

Byter is a free menu bar app that tracks data usage on each network, with history, live speed and speed tests. Activity Monitor is built in but resets on restart.

Can I monitor hotspot data usage on a MacBook?

Yes. Byter records how much data you use on each network, so your phone hotspot usage is shown separately from your Wi‑Fi.

Does Byter block apps from using data?

No. Byter shows and records your usage and speed. To block apps, you can use TripMode alongside it.

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