Good but far from perfect
This is a really cool and fun app but it is definitely not the best tone app out there. Out the many I've tried, Melodica is the best. While others are better for creating and saving melodies, this one is really fun for occasional use and to pass time. I love the various options such as night mode and Conway's life, but there are areas that need improvement:
Make the sounds louder. Even with headphones, the sounds are extremely quiet and a little distorted.
Make it easier to scroll through saved melodies. (Melodica has a flawless album art type viewing feature which allows you to view and listen to each melody) It's annoying to have load and open each sound individually.
Improve the menu screen. The buttons are unresponsive and I have to press the buttons several times before it does anything.
Add some more sound options such as different sounds, instruments, sound effects, etc.
This is a nice way to pass the time and is worth the $.99, but not any more than that until there are some updates and major changes. Good start.