Edited by Tejas Telkar · Published · Updated
Short answer
NotchPop System displays current upload and download activity for your Mac. Those rates describe observed traffic, not your internet plan's maximum speed. Use a dedicated speed test for capacity and Activity Monitor's Network view for a more detailed look at activity.
Distinguish use from capacity
An idle Mac can show a very low download rate on a fast connection because no application is requesting much data. A current-traffic monitor measures what is happening now; it does not deliberately fill the connection to test its limit. Likewise, a high upload reading does not identify the destination by itself.
Open System and find the Network tile's down and up indicators. Read the displayed units carefully when comparing them with a file-transfer app or an internet provider's advertised speed. Bytes and bits are different units, and software may choose different scales for its display.
Observe one known transfer
- Start a non-sensitive download or upload with visible progress.
- Observe the corresponding rate in NotchPop while the transfer is active.
- Pause the transfer using its own app and see whether activity decreases.
- Open Activity Monitor's Network view if you need to investigate other active applications.
Other apps may continue syncing while your test is paused. The system total therefore need not fall to zero. Keep background tasks in mind before attributing every byte to the file you started. A compact rate tile is useful for awareness, while the original transfer app remains the place to check completion and errors.
Investigate a stalled task
If an upload stops, inspect its error, the source file and your connection. An awake Mac with no network traffic may be waiting for a server rather than sleeping. If sleep is involved, follow download interruption checks instead of interpreting a quiet network tile as proof of a sleep problem.
For development work, a localhost server can be healthy even when internet traffic is minimal. For website analytics, visitor counts are another metric entirely: GA4 readings describe people using a website, not data currently passing through your Mac's network adapter.
Sources and editorial notes
Published by NotchPop, the maker of the app. macOS instructions and third-party claims are linked to the sources below. Settings and offers can change between versions. Read our editorial approach or send a correction.
