Clockface is working in m series

[kk100]

Download following apk and install

https://drive.google.com/file/d/14U6LciOT9teVAAJfpwtxN4EU505ykY3N/view?usp=drivesdk

Then go to setting> lock screen> always on display> clock style

Note:- that only work on always on display. Not on lock screen

[Gourav_Sen]

Great 👍

[KaushalS]

It is for always on display only

[kk100]

Yes, when you try for lock screen then clock face will be stopped

[RvShankar]

I think its moded apk because same Version from Apk mirror doest not install but that one works in Galaxy M21