AUDIIO is a free iPhone app developed by BetaMatters Limited. It is a powerful real-time audio analyzer that allows users to visualize audio in various data graphs such as RTA Bar, Line Graph, FFT, and Spectrogram.

One of the main features of AUDIIO is its ability to provide full octave and 1/3 octave analysis. This allows users to have a detailed understanding of the frequency content of their audio. Whether you are a musician, sound engineer, or just an audio enthusiast, this feature can greatly enhance your understanding and control over the audio you are working with.

The app also offers the option to switch between linear and logarithmic scales, giving users the flexibility to choose the scale that suits their needs best. Additionally, AUDIIO provides peak dB data and current dB data, allowing users to monitor the dynamics of their audio in real-time.

The UI of AUDIIO is sleek, functional, and elegant. It is designed to be user-friendly and intuitive, making it easy for users to navigate through the various features and graphs.

Overall, AUDIIO - RTA Analyzer is a valuable tool for anyone working with audio. Its real-time analysis capabilities, comprehensive data graphs, and user-friendly interface make it a must-have app for musicians, sound engineers, and audio enthusiasts alike.