D3LPHIN is a cognitive enhancement app designed for iPhone users, offering a variety of engaging features aimed at improving focus, memory, and mental strength. Inspired by the work of psychologist Daniel Kahneman, the app includes a unique game where users add one to each digit of a randomly generated number, fostering concentration and cognitive strain.

In addition to the arithmetic challenge, D3LPHIN features a card-matching game to help enhance memory retention, as well as a customizable puzzle game that allows users to upload their own images for a personalized experience. The app also includes a voice-activated journal feature, enabling users to record thoughts and daily activities effortlessly, as the app transcribes audio input into written text.