Water is insanely powerful. As others have said, it could help you get tired swimming. It will not save you if you get pinned, or trapped in hydraulics, like the deadly ones at the bottom of weirs (those low dams, extremely dangerous. You get maytagged until you drown)
The best thing is to not live in flood plains or ecologically risky areas if you can. Research flood maps before moving somewhere. Extreme weather events will become more and more common as the planet deteriorates, unless we dramatically change our emissions, which is not a priority, apparently.
This app seems like a privacy nightmare if you create profiles for people. I can guarantee you this type of app is going to get people to commit suicide after rumors abound about them. This seems perfect for cyberbullying and stalking, especially if you can get push notifications whenever they are nearby.
Who greenlit this shit? People would lose their minds if there was a male equivalent for women. (Which is also a terrible idea). Thank God I'm too old and queer, Jesus. What a terrible development for society.