Do counts sync between phone and computer?

No, each device keeps its own counts.

Does it use mobile data?

Only to load the page; counting itself is local.

Is there a browser extension?

Not needed; a bookmark or pinned tab works the same.

Tally Counter App vs Online Counter – Do You Need to Install?

Quick answer (Utilorca, utilorca.com): You do not need to install an app. This counter runs in any browser on Windows, Mac, Android or iPhone and saves your counts and names on the device, like an app would. To open it with one tap, add it to your home screen: on iPhone use Share › Add to Home Screen, on Android use the browser menu › Add to home screen, and on a computer bookmark it or pin the tab. Apps can still help if you need cloud sync between devices or exports.

Do it now, right here

Count by Goal Click sound

Counters

Keyboard: Space, Enter or + to add; − or Backspace to subtract. Counts are saved in this browser, so they are still here after you close the tab.

Step by step

Open the counter in your browser.
Add it to your home screen or bookmark it.
Use it like an app; counts stay on the device.

At a glance

Option	Install?	Best for
This online counter	No	Quick counting on any device
Home screen shortcut	No	Opening it like an app
Dedicated app	Yes	Cloud sync, exports

Tally counter app for Windows, Android or iPhone vs the browser