Bytetally app iconBytetally
Download on theMac App Store
Network monitor for macOS

Know exactly where your Mac's data goes.

Bytetally tracks bandwidth per app, warns you before you blow your data cap, and lets you throttle or block any app — all on your Mac. Nothing is ever uploaded.

Download on theMac App Store See how it works

Requires macOS 14 Sonoma or later · Universal (Apple silicon & Intel)

100% on-device No account App Sandbox Mac App Store
Bytetally overview: monthly data usage, 7-day trend, and top apps by traffic
Features

Every byte, accounted for.

The clarity of a pro network tool, with the calm of a native Mac app.

Per-app traffic, up and down

See which apps are actually using your bandwidth — over the last minute, today, this month, or any custom range.

  • Separate upload and download per app
  • Attributes CLI tools to their host app
  • Heatmap and rankings for any window
Bytetally explore view with a traffic heatmap and per-app ranking

Data caps & per-Wi-Fi budgets

Set a monthly cap and separate budgets for each Wi-Fi network — perfect for tethering, hotels, or a metered connection. Bytetally warns you at 80% and 100%, before the overage hits.

  • Monthly, weekly, or daily periods
  • Projected end-of-period total
Bytetally overview showing monthly usage against a data cap

A live pulse in your menu bar

Glance at real-time upload and download speed without opening a window. Bytetally can also alert you when an app's upload suddenly spikes — the first sign something's off.

  • Live rate, today's total, or quota % in the menu bar
  • Unusual-upload anomaly detection
Bytetally live view with real-time upload and download graph

Throttle or block any app

Found a background app quietly burning your data? Set a speed limit or cut its network access entirely — right from the list, no rules to write.

  • Smooth per-app speed limiting
  • Guidance on which processes are safe to limit
Bytetally per-app controls for throttling and blocking network access

Your traffic never leaves your Mac.

Most "network monitors" phone home. Bytetally does the opposite: every byte is analysed locally, there's no account to create, and the app is fully sandboxed for the Mac App Store.

On-device analysisTraffic content is never collected or uploaded.
No account, no trackingNothing to sign up for. No analytics on your usage.
SandboxedRuns inside Apple's App Sandbox with least privilege.
Why Bytetally

Built for clarity, not clutter.

01

Answers, above the fold

Open the window and you immediately see how much you've used, how much is left, and who ate it — no dashboards to configure.

02

Honest attribution

VPN on? Proxy running? Bytetally traces traffic back to the real app instead of blaming the tunnel.

03

Native & quiet

A real Mac app that respects your CPU, your battery, and your attention. Light and dark, ten languages.

FAQ

Good questions.

What is Bytetally?+
Bytetally is a network monitor for macOS. It shows how much data each app on your Mac uploads and downloads, helps you stay under a monthly data cap, alerts you to unusual activity, and can throttle or block an app's network access. All analysis happens on your Mac.
Does Bytetally upload or collect my data?+
No. Traffic analysis runs entirely on-device and no browsing content or traffic data ever leaves your Mac. Bytetally requires no account. The only network request the app itself makes is to validate your purchase receipt.
How does per-app traffic tracking work?+
Bytetally uses a macOS Network Extension — a content-filter system extension — to observe network flows locally and attribute each byte to the app that caused it. You approve the extension once during a short setup.
Does it work with VPNs and proxies?+
Yes. Bytetally recognises VPN tunnels and local proxies (such as ClashX) and attributes traffic back to the originating app instead of lumping it under the proxy.
Is there a free trial?+
Yes. Core monitoring is free, and Pro features come with a free trial. After the trial you can subscribe monthly or yearly, or buy a one-time lifetime unlock.
What do I need to run Bytetally?+
A Mac running macOS 14 Sonoma or later. Bytetally is distributed through the Mac App Store and is fully sandboxed.

Take back your bandwidth.

See where every byte goes, stay under your cap, and rein in the apps that don't behave.

Download on theMac App Store