Timer for desktop, web or android?

Question

Software and Internet Services

Gentlemen, advise the timer.
I am doing a startup, I want to know at the end how many hours were spent.
Therefore, a timer of approximately this type is of interest:
I sat down to make a website - set the timer, left - turned it off.
Tomorrow he turned it on - he counts further from the place where he stopped, etc. until I'm done.
If you can keep two or three timers (well, if you do 2-3 sites in parallel), it would be generally good.
Is there something similar?!

Answer 1

I am using this product. I miss the features of the free version.
It's Web, so you need an internet connection. really not permanent.
Connected, turned on the timer, and he counts the time on the server. Sometimes I forget to turn it off in the evening, and he counts the dog all night.
He has clients for different systems , including androyd.
Under the desktop, the timer is said to work under Windows, under linux I got it, but I had to compile it with my hands, and some kind of clumsy one.
I use widgets toggl.com/timer and toggl.com/nano. Opened in a separate window.

Answer 2

let me google for you-link #1
let me google for you-link #2

Answer 3

There is an alternative: use some version control system. They write logs, and there are wonderful analyzers for these logs. It is probably only necessary to make special commits marking the beginning and end of working hours.