[Release] FluxScope: Find out what’s using your Mac’s data

FluxScope began with a mystery during a coding session. One afternoon, we suddenly discovered that our entire 500GB data allowance was gone. We had no idea which app had used it, when it happened, or why.

We wanted a tool that could leave a record and give us somewhere to start the next time it happened. That became FluxScope.

FluxScope is a native Mac network investigator. Start with when the traffic happened, then follow the applications, processes and connections behind it.

• Find busy apps: inspect uploads and downloads by application and process.
• Investigate a spike: bring a selected time window and observed app activity into the same view.
• Watch your allowance: set data budgets and alerts, then review daily and monthly usage.
• Keep a local record: no FluxScope account, with up to 31 days of history and data export.

View on the Mac App Store · US$4.99 once. No subscription or trial. Regional prices are shown in your storefront.

Follow the traffic to an application

A network speed counter tells you your connection is busy. FluxScope helps you take the next step: inspect the application, its processes, and observed remote IP addresses and ports.

Unfamiliar process name? Built-in explanations for applications and system services give you context and suggested checks, so you can look for the relevant sync, update or background task.

Go back to the moment usage jumped

Choose a period in Time investigation to review downloaded bytes, uploaded bytes and actual observed duration, alongside the application evidence collected in that window.

Gaps from pausing, sleeping or quitting remain visible. FluxScope does not estimate traffic it never observed. After manually changing an app's behavior, you can compare average rates on the same interface to help assess what changed.

With a VPN or proxy, the original app, forwarding process and network interface may all observe the same transfer. FluxScope keeps application evidence separate from interface accounting, so you can compare the layers without adding overlapping counters together.

Give your hotspot a budget

Create budget profiles for a hotspot, a trip or a billing cycle, and manually select the profile you are using. Choose a billing date, add known usage and enable optional usage or sustained-transfer alerts.

Daily and monthly reports reveal changes over time. Saved sessions let you return to an investigation, while CSV and investigation-report exports help you keep the evidence or continue your analysis.

At home on your Mac

FluxScope includes menu-bar controls, light and dark appearances, and English and Simplified Chinese support. Recording can continue in the menu bar with the main window closed.

Monitoring records stay on your Mac. Investigation and analysis do not depend on a large language model or require AI model downloads.

FluxScope observes and investigates traffic. It does not automatically block connections, decrypt HTTPS or prove the contents of every download. Short-lived connections, system permissions and proxy forwarding can limit attribution, and its totals are not a carrier bill.

Take a closer look at your connection

Requires an Apple silicon Mac running macOS 14 or later.

View FluxScope on the Mac App Store, or explore the real interface on the FluxScope website. See the product guide for workflows and measurement details.