While looking for open source dive log applications on F-Droid (in preparation for my Advanced Open Water Certification) and I found an app called Subsurface and apparently it is as developed by none other than Linus Torvalds himself.
I also found this neat YouTube video of Dirk Hohndel talking about scuba diving with Linus.
Yes you’re right. Idk how but I found Linus’s forked repo first and saw on a couple websites that he did start the development for it.
https://subsurface-divelog.org/
https://www.deeperblue.com/scuba-meets-information-technology-with-linus-torvalds/