This app was mentioned in 8 comments, with an average of 2.88 upvotes
For anyone wondering, here is the app in question from the Google play store: Gloomhaven Monster AI
It's still a work in progress but has come a long way so far.
I use the Meeple Realty insert, with an expandable folder for the map tiles. I've also kept it half set up since I got it. Also, use the unofficial companion app for the monster decks and their attack deck, and you'll only have to mess with the square monster cards. https://play.google.com/store/apps/details?id=com.gloom.monika.monsterai
I really enjoy playing it. I've unlocked all the classes, and I'm now waiting for the spindials from the second kickstarter before I pick it up again. I've played mostly with 2 players, each controlling 2 characters. I have played a handful of missions solo, controlling at least 2 characters. It works pretty well for both situations. I think I've even done one playing 3 characters at once.
The meeple realty box really helps with keeping it kinda arranged. I also use an expanding folder for the tiles, which drastically cut the set up and tear down times for me.
I also highly recommend the fan-made companion app. It takes care of the monster decks for you, making it much smoother. https://play.google.com/store/apps/details?id=com.gloom.monika.monsterai
I'm using the android app avaliable here. I really like added scenario level calculator, it's silly how long it sometimes took us to figure out our proper difficulty, heh. From what I know there should be also damage calculator added soon, that will give you combined damage from the scenario level and possibly drawn modifier.
Thank you for mentioning the monster deck app! I found one for Android and tested it out.
Seems to work great!
You can use the MonsterAI app to replace the monster cards I believe.
Edit: Link to the app in the Google Play store: https://play.google.com/store/apps/details?id=com.gloom.monika.monsterai
There's an app out for android that works very well for the monster decks, both ability and modifier. https://play.google.com/store/apps/details?id=com.gloom.monika.monsterai&hl=en