So instead of having a limit of cards I can review per day I’d like to spend e.g. max 0.5h per deck per day. I know that I can set a separate timer or something but that’d be way more convenient.
I don’t know about add-ons, but in the preferences screen you can configure a notification after a certain number of minutes.
Where can I find that setting?
Tools > Preferences > Scheduling > Timebox time limit