If you already have Flappy Bird, keep it! The author of the game has removed it permanently. If you're just now finding out about it and want to play it, it's okay. There are several other games that are just like it. Here are just a few.

Best of all, these are free downloads so if you don't like them, no harm done. Just delete and move on.

Fluffy vs Flappy birds

Flappy Birdie

Flappy Bee

Flappy Plane

Ironpants

Most of these (if not all) are also available on android and shouldn't be a problem to search and download.

Happy playing!