A free app for Android, by SS Game Company.

Explore the mysterious underwater world in Yellow Submarine, a game developed by Studio 87 International. Collect as many gold coins as you can, which will unlock more power-ups to aid you in your exploration. Power-ups include a shield, sonic blast, and more. There are even cool rewards waiting for you as well. But watch out for underwater mines and other obstacles lurking in the deep waters. 

Aside from English, Yellow Submarine supports the following languages: Portuguese and Spanish. This makes the app accessible to non-native English speakers. The graphics are cute, immersive, and kid-friendly. Right now, Yellow Submarine is available on the Play Store at a low price.