Where can I find latest Lifeograph package for Ubuntu?

Usually an older version of Lifeograph can be found in Ubuntu repositories. Fortunately, latest package of Lifeograph for Ubuntu can always be obtained by adding "ppa:dmxe/ppa" (without quotation marks) to software resources.

You can use following command to do this:

sudo add-apt-repository ppa:dmxe/ppa

For more information please refer to https://launchpad.net/~dmxe/+archive/ppa

Unfortunately that "ppa" is not being updated for some time.

But luckily the official Ubuntu repos have been updated in a timely manner since the desertion of that PPA, so that users of latest Ubuntu versions usually do not have to bother with PPAs. Of course, LTS users are an exception to this. To help with that, any volunteers would be most welcome.