Stopwatch/countdown timer function in LO?

Hey everyone, does anyone know of an extension/add-on that would enable stopwatch/countdown timer functionality within libreoffice?

In order to better organise my life and my time I have recently been keeping track of how my time is spent/how long certain activities take by using a multi-stopwatch app. Various tasks such as errands and chores are recorded on my android app, then manually entered into a Libreoffice spreadsheet.
If I were able to use a stopwatch function within Libreoffice itself, then I could skip the manual entering step by recording the data directly into a spreadsheet in Libreoffice Portable on my smart phone.

Failing this, can anyone think of an app that could have the data synced somehow with Libreoffice, or suggest another method to achieve this?
Basically I’d like an automatic way of databasing my stopwatch data, in order to avoid the time-consuming, prone-to-human-error method of manual data entry.

Thanks as always.

Hi, I have used the desktop version, have a look at the attached file as see if it helps,
B1 is now, TODAY()
Cell B1 and columns C and E are formatted YYYY-MM-DD HH:DD:SS.

When you start or end a task:
(1.) Refresh screen to update B1
(2.) Edit copy/edit paste special “unformatted text” to either start or end a task.
(3.) To see how long the current open tasks have been running just refresh the screen (F9) on the desktop.

LOQ_20191003.ods

Let us know if it helps.

Sure does! Thanks