It will be helpful if you can upload the reports to internet or more precisely an mobile help so that developer can analyse any time he wants.
Pros:We get both minimal as well as visual representation of our coding habits.
Cons:Alternatives are there but they don't work as the same way CodeTime does. Most of them are complicated and online.
without offline tracking i don't think the ultimate goal of this app would be achieved
Pros:it's consise
Cons:it would be helpful if Code Time works offline