TuneCrack is described as 'stands for: Crack the tuning problem. The importance of tuning is often underestimated. However, tuning is a necessary step for every performance. TuneCrack has exercises to improve your listening skill and your pitch transfer skill'. There are three alternatives to TuneCrack for a variety of platforms, including Mac, Windows, Windows Mobile, Android and Android Tablet. The best alternative is PitchPerfect, which is free. Other great apps like TuneCrack are PitchBlitz (Free) and Pitch Grid Test (Free).
PitchPerfect is a easy to use and simple guitar tuner. PitchPerfect eliminates the need of tuning a guitar conventionally and will automatically detect the note you are playing. You can simply tune your strings quickly & easily to any note you want!.
PitchBlitz prepares you for the Pitch Grid Test. The Pitch Grid Test evaluates your relative pitch sense. PitchBlitz focuses on speed and pitch-distance recognition with precision. Exercises help you to improve your relative pitch hearing abilities.
The Pitch Grid Test assesses your relative pitch sense with a relative pitch indicator, which shows your pitch-distance recognition ability in cents. Your answering speed is also measured: an important feedback for relative pitch training.