00:0006:0012:0018:0024:00
Drop detected · 21:00-23:00
A LITTLE APP FOR YOUR MAC
Your internet.Clearly measured.
Know your real speed, spot the dips, and see the pattern. VelociBar quietly measures your connection, right from your menu bar.
macOS 26 or laterNo account. Just your Mac.
VelociBar
Connected
Download speed
92.4Mbps
Responsiveness1240 RPMHigh
Your history stays on your Mac
100%
On your Mac, on-device
2
Complementary measurement engines
CSV
Full history, exportable
01 / REAL MEASUREMENT
Two engines. A clearer picture.
VelociBar alternates Apple's networkQuality tool with a real download from a global CDN. It measures the performance you actually get while browsing, not an idealized lab number.
Result
Engine
Apple networkQuality
Engine
CDN download
92.4
Mbps
real download
1240 RPM · resp.
1240 RPM · resp.
02 / BEYOND THE MBPS
Speed doesn’t tell the whole story.
Speed isn't everything. VelociBar measures responsiveness under load (RPM): how many times per minute your network answers while it's saturated. It's the bufferbloat metric, and it's what decides whether Zoom freezes.
Every test is rated Low, Medium or High (the same scale Apple's own tool uses) so you can tell at a glance whether the problem is speed or stability.
Responsiveness under load
1240
RPM
Low
Medium
High
03 / THE BIGGER PICTURE
Every measurement tells a story.
Every test is saved locally and plotted on a timeline. Spot the 9 p.m. drop, the weekend congestion, or the exact day your connection changed.
Last 24 h · Mbps
04 / YOUR DATA, IN YOUR HANDS
From a hunch to hard evidence.
Export the full history in one click: timestamp, engine, download, latency and responsiveness. Objective evidence for your ISP, or just for you.
The card shows an excerpt: the full file has eight columns, including is_error, duration_s and bytes_downloaded.
speed_log.csv
timestampsourcedownload_mbpslatency_msresponsiveness_rpm
09:15apple92.4121240
14:30custom88.715980
21:30apple45.186210← drop
23:45custom90.2141110
Your data never leaves your Mac. No accounts, no cloud, no telemetry. Every test, every log and every export runs locally.
A LITTLE MORE PERSPECTIVE
VelociBar or a one-off speed test?
Speedtest and Fast.com are great for a snapshot of the moment. VelociBar answers a different question: how your connection behaves throughout the day, every day.
| One-off tests | VelociBar | |
|---|---|---|
| When it measures | Only when you run it | Automatically, every 15, 30 or 60 minutes |
| What it reveals | A snapshot of that instant | The real pattern: the 9 p.m. drop, the weekend congestion |
| Bufferbloat | Not always measured | Responsiveness under load (RPM), rated Low / Medium / High |
| History | Limited, or requires an account | Local on your Mac, exportable to CSV in one click |
| Privacy | Web service, varies by provider | No accounts, no cloud, no telemetry |
You don't have to choose: use a one-off test to check the moment, and VelociBar to know (and prove) what your connection is really like.
GOOD TO KNOW
A little more
A little more
clarity.
A few things to know before you get started.
What exactly does VelociBar measure?
VelociBar measures real download speed (Mbps) and responsiveness under load (RPM). It alternates two engines: Apple's networkQuality tool and a real download from a global CDN, so it reflects the performance you actually experience, not a lab number under ideal conditions.
What is responsiveness (RPM), and why does it matter?
Responsiveness measures how many round trips your network completes per minute while under load. It's the bufferbloat metric: it explains why a video call stutters or a game lags even when your download speed is high. VelociBar rates it Low, Medium or High.
Does VelociBar upload my data anywhere?
No. All results are stored only on your Mac. There are no accounts, no cloud and no telemetry. You have full control of your data.
Can I export the history?
Yes. VelociBar saves every test to a CSV file with timestamp, engine, download (Mbps), latency (ms) and responsiveness (RPM). You can open or export it in one click: objective evidence for your ISP or for your own tracking.
Does it run in the background?
Yes. VelociBar lives in the menu bar and runs automatic tests at the interval you choose: every 15, 30 or 60 minutes. It also includes a widget so you can see your latest reading at a glance.
What do I need to run VelociBar?
macOS 26 or later. You can download VelociBar from the Apple App Store.
How do I prove to my ISP that my internet is slow?
Let VelociBar measure in the background for a few days, then export the history to CSV. The file includes timestamp, measurement engine, download (Mbps), latency (ms) and responsiveness (RPM): objective evidence of recurring drops (say, every night at 9 p.m.) that a one-off test can't show.
Does VelociBar replace Speedtest or Fast.com?
It complements them. A one-off test is great for checking a single moment; VelociBar measures continuously and automatically, keeps the history on your Mac, and exports it to CSV, so you can see patterns over time and have objective evidence. Many users run both.
ALWAYS IN YOUR MENU BAR