How to Check If an App Is Running in Background and Connected to Internet on macOS

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Wondering if an app is silently running in the background and consuming your internet bandwidth on macOS? Whether it’s an update, a cloud sync, or a potential security concern, macOS provides built-in tools to monitor app activity and network usage.

This guide walks you through the steps to identify background apps and check their internet connectivity.

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Why Monitor Background Apps and Internet Usage?

Background apps can drain system resources or connect to the internet without your knowledge, potentially slowing your Mac or exposing your data. Tracking them helps optimize performance and maintain privacy, especially on shared or public networks.

What You’ll Need

• A Mac running any version of macOS.
• Administrative access (for some actions).

Step 1: Open Activity Monitor

Activity Monitor is your primary tool for viewing all running processes, including background apps:

1. Open Finder and navigate to Applications > Utilities > Activity Monitor, or search for it using Spotlight (Cmd + Space, type “Activity Monitor”).
2. In the Activity Monitor window, you’ll see a list of processes under tabs like CPU, Memory, Energy, Disk, and Network.

Step 2: Identify Background Apps

Not all processes are visible apps. To focus on background activity:

• Switch to the All Processes view from the View menu.
• Look for apps or processes not currently open in a window. Background apps often have names like “cloudd” (iCloud), “Google Chrome Helper,” or system daemons.
• Sort by % CPU or Memory to spot resource-heavy processes.

Step 3: Check Internet Connectivity

The Network tab in Activity Monitor shows data usage:

1. Click the Network tab.
2. Columns like Sent Bytes and Received Bytes indicate network activity. Sort by these columns to see which processes are sending or receiving data.
3. Double-click a process to view detailed info, including its network activity over time.

Step 4: Use Terminal for Advanced Monitoring

For a deeper look, use the Terminal:

1. Open Terminal (via Spotlight or Applications > Utilities).
2. Type lsof -i -P and press Enter. This lists all open internet connections, showing the app or process name, protocol (e.g., TCP), and connected IP addresses.
3. Look for unfamiliar processes or excessive connections.

Step 5: Manage Background Activity

If you find an unwanted background app:

• In Activity Monitor, select the process and click the X button to Quit or Force Quit (use cautiously).
• To prevent future background launches, go to System Settings > General > Login Items and remove the app.

Troubleshooting Tips

• No Network Data? Ensure your Mac is connected to the internet (Wi-Fi or Ethernet) and refresh Activity Monitor.
• Unrecognized Processes? Search online for the process name to determine its purpose before terminating.
• Slow Internet? A high Received Bytes count may indicate a background update or sync.

Example: Monitoring iCloud Sync

• Scenario: You notice slow internet and suspect iCloud.
• Action: Open Activity Monitor, go to the Network tab, and sort by Received Bytes. If “cloudd” shows high data usage, it’s syncing files. Pause iCloud in System Settings > Apple ID > iCloud to test.

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Finally

Monitoring background apps and their internet usage on macOS is straightforward with Activity Monitor and Terminal. Regular checks can boost performance and security. Let us know your experience or challenges in the comments!