A free program for Android, by Tara Westover.

Survival of the fittest–such is the theme of this Android game developed by Tara Westover. It may contain ads, but it compensates by letting you download the app for free. In this game, you play as a fish who must eat other fish to evolve into the ultimate ocean hunter. You will have to avoid the bigger, stronger, and faster fish as you hunt for food in this aquatic adventure. Use your fish to avoid high-level ocean creatures, but eat the other fish to evolve into the most powerful underwater warrior! Kids three years of age and beyond may play also play this.