This app was mentioned in 4 comments, with an average of 1.00 upvote
I really like Fisherman's Horizon.
Vlambeer's Ridiculous Fishing was amazing but unfortunately it has not been updated for quite some time.
There's a game called Fisherman's Horizon. It may not be exactly what you're looking for, but it's pretty cool for what it is. Completely free with no ads and no IAPs.
Edit: link https://play.google.com/store/apps/details?id=com.fishermanshorizon.app