Reverse Chord Finder
There are plenty of regular chord dictionaries on the App Store already, but Reverse Chord Finder is different.
You select the notes on the piano keyboard or guitar fretboard and Reverse Chord Finder will tell you the names of the chords that match.
Normal chord dictionaries tell you which notes belong to a particular chord, but Reverse Chord Finder works the other way around: it tells you which chord belongs to a particular group of notes.
This is a great way to find out what chords you're actually playing, and to learn new chords.
Price: only $0.99 or €0.79
Fnurgletoe (Egg Chess)
It's like 3-in-a-row, it's like tic-tac-toe... but much harder!
If you like casual strategy games, then give Fnurgletoe a try.
The objective of this board game is simple: be the first player to put three identical pieces in a row. There's only one problem: your opponent can change your pieces and use them against you!
The rules are simple but the game is hard. Play against the iPhone or another person, or watch the iPhone play itself.
Praise from other players:
Price: only $0.99 or €0.79
Now also available as a free, ad-supported "Lite" version.
Simon Sings
Learn to sing, improve your hearing, and train your memory... at the same time!
Simon Sings plays a sequence of musical notes that you have to memorize and then repeat by singing, humming or whistling into the iPhone's microphone. With each new round the sequence becomes longer.
Start in Beginner mode with only 3 possible notes, move up to Intermediate with 6 notes, and finally become a Maestro with all twelve notes of the musical alphabet.
How many notes can you memorize and sing in tune?
Price: Free
Ultimate Countdown
Ultimate Countdown is an electronic "chicken" game for two players.
Each player holds down their big red button while the timer quickly counts down to zero.
The last player to let go is the winner — but only if the timer hasn't hit zero yet!
What other players say:
"I play it during every break in school"
"Really good for waiting in line with people"
"Makes for an awesome drinking game"
"You got kids? Get it, keeps them shut up in the car!"
Price: Free
"Both my wife and myself are hooked"
"It is tantalizing just beyond my grasp"
"The computer player is challenging. Good job!"
"The name is fun to pronounce"