This app was mentioned in 3 comments, with an average of 1.67 upvotes
This is very cool, and even cooler that you're so responsive and collaborative on here. Well done!
I've held on to an Android app called Combat Assistant for years (link below) - it was designed for 4e but still works well enough for 5e. I think the main feature it has that I like so much is it tracks duration of conditions. When you apply a condition you can tell it to last until the end of x players turn, or that it should be a save every turn, etc. It then auto removes conditions accordingly, or pops up a box asking if the save was made. This is the one feature that has prevented me from adopting any of the more modern tools. For this to all work, it highlights the current PC/NPC and you click next when their turn is done. Is that something that could some day be implemented in yours, or is that way out of scope for what you've built?
There's two other features I love in the CA app. First is auto-rolling initiative for creatures. Handy but not needed. The other feature of it I love is one that you actually might have beat! It allows for a csv import of creature stats which made the mundane task of entering them all much easier. Yours though has that existing database that I imagine has most things other than specific unique dudes from a campaign book. I'm jealous of that feature, well done!
https://play.google.com/store/apps/details?id=org.visionsoftware.combatassistantfree
Combat Assistant is vital to me for tracking initiative and conditions. Still very useful to me even in the more streamlined 5e world.
Here's a link to the free version (https://play.google.com/store/apps/details?id=org.visionsoftware.combatassistantfree). I can't remember the free vs paid limitations, but the paid version is only a few bucks.
Combat Assistant has become completely indispensible for me for tracking initiative, monster HP and conditions. It even has a csv import feature so you can quickly add a bunch of monsters ahead of time.
It was built for 4e but I still find it just as useful for 5e. Free version is fully functional, but does not save from session to session.