MorseKey is a straightforward iPhone application that allows users to practice sending Morse Code. With a simple touch of the screen, the app produces a tone, the length of which is determined by the duration of the touch. Quick touches create dots, while touches held down three times longer create dashes.

Users have the option to adjust the tone frequency from 300 Hz to 1200 Hz in the Settings. The volume can also be adjusted to a lower level. Additionally, the app offers an iambic keyer (mode A) with adjustable dot speed.

It's important to note that MorseKey does not include a Morse Code tutorial. However, users can easily find one on Wikipedia or the ARRL website. For another educational Morse Code application, users can also check out MorseTest, available in the iPhone App Store and developed by HotPaw Productions.