The original idle game where you bake cookies to rule the universe!
This is the official Cookie Clicker app by Orteil & Opti. Accept no substitutes!

? Tap to make cookies, then buy things that make cookies for you. Then tap some more!
? Hundreds of upgrades and achievements to unlock.
? The game continues while your phone is closed, so you can set up your ideal bakery and resume later to reap the delicious profits!
? Lovingly-crafted pixel art and flavor text!
? Ascend to gain permanent transcendental upgrades!
? Beware the grandmas!