I've now been using diarium for a over a year ... 50-something plus weeks (which is a huge milestone for my self, sticking with something), where with my weekly appointment with my therapist , I create a "Therapy - Week in Review" entry, which, I do "a week in photos", as I take photos on my phone when I doing something noteworthy, but unable to take notes, and a run down of the week, and whatever issues, tasks, homework, selfwork was up for the week.
I'd like to be able to review (on macOS) the past week entries, while keeping a new/draft entry open. Think, Mail.app. I can open some emails, and have a draft open at the same time, so I can more easily create the summary.
This functionality does not need to (probably shouldn't) carry over to the mobile app. Which I also use in iOS.