This is a great one to start with:
https://budgetlightforum.com/t/-/45138
Zak's ceilingbounce app. Focused on runtime graphs. Maybe you could use it for output as well, but never done that, so I don't know how accurate that would be.
Here is a list of Luxmeters that do the logging for you as well.
https://budgetlightforum.com/t/-/56270