Hello Pine, Currently, the Wikimetrics "Bytes added" metric can track cohorts of users and their editing contributions of the count of bytes added, removed, or the absolute or net combinations of those, but has the same problem Amir describes in which it is still only based on the net change recorded each edit "save" as that is the change data stored for each edit and the data behind that metric. Pine, you are also correct that Wikimetrics does not distinguish mobile vs. desktop. Not sure what it would take to integrate as a new metric feature in Wikimetrics. That would be a question for the Analytics team. Their work board for current Wikimetrics tasks and backlog are on Phabricator [1] as well as a separate community requests board [2]. The best way to ask about Wikimetrics is often the mailing list [3] or via comment on the specific Phabricator tasks. As far as measuring it differently, Aaron Halfaker would likely be best to ask as he works to define edit sessions in his research work [4], but he has also reported mobile edit session capturing as problematic [5]. Hope that is helpful. Best regards, Jaime Links: [1] https://phabricator.wikimedia.org/tag/analytics-wikimetrics/ [2] https://phabricator.wikimedia.org/tag/community-wikimetrics/ [3] https://lists.wikimedia.org/mailman/listinfo/wikimetrics [4] https://meta.wikimedia.org/wiki/Research:Activity_session [5] https://meta.wikimedia.org/wiki/Research:Activity_session#Mobile.2Fdesktop_… -- Jaime Anstee, Ph.D Senior Strategist Wikimedia Foundation +1.415.839.6885 ext 6869 www.wikimediafoundation.org Imagine a world in which every single human being can freely share in the sum of all knowledge. Help us make it a reality! *https://donate.wikimedia.org <https://donate.wikimedia.org/>* On Mon, Aug 10, 2015 at 1:27 AM, Pine W &lt;wiki.pine(a)gmail.com&gt; wrote: