KeyChord is an innovative reference app designed for musicians and piano enthusiasts. This dynamic dictionary allows users to explore all scales and chords through an intuitive virtual keyboard interface. The app stands out with its 88-key multitouch piano feature, offering 128 different sounds from Mini Piano Pro.

Beyond basic chord and scale lookup, KeyChord provides advanced functionality including reverse lookup, staff view, and inversion capabilities. Users can experiment with over 50 chord types and 100 scale types while enjoying professional features like dark mode support and MIDI recording. The app's intelligent system understands chord structures rather than relying on pre-defined patterns, making it a powerful tool for music composition and learning.

Whether you're a beginner or professional musician, KeyChord serves as an essential practice companion and reference tool. Its comprehensive features make it particularly valuable during music theory studies or songwriting sessions, providing instant access to crucial musical information.

KeyChord distinguishes itself through its sophisticated feature set tailored for serious musicians. The app's core functionality revolves around its virtual keyboard interface, which supports multiple interaction methods including tap, long-press, and multi-touch gestures. This enables users to manipulate chords and scales dynamically across seven octaves.

Advanced capabilities include comprehensive reverse lookup for both chords and scales, supporting even partial chords with missing notes. The app provides detailed information about note names and component intervals while offering various visualization modes. Professional-grade features extend to audio playback in all modes and the ability to record compositions as MIDI files.

Unique to KeyChord is its integration with Mini Piano Pro, creating a seamless experience between reference work and practical application. The inclusion of favorite and recent chord types, along with dark mode support, demonstrates attention to user experience. These features collectively establish KeyChord as a premier mobile solution for music theory exploration and practice.

KeyChord offers an extensive virtual library of musical knowledge, featuring over 50 chord types and 100 scale types. This vast collection ensures that musicians of all levels have access to a comprehensive reference for their practice and performance needs.

The app's content is carefully curated and verified, ensuring the accuracy and authenticity of each chord and scale. By avoiding pre-defined entries and instead using dynamic calculations, KeyChord guarantees that every piece of information is both correct and reliable.

Musicians benefit from this robust library as they can explore various musical combinations with confidence. The assurance of copyright authenticity means users can trust the integrity of the material they are learning from.

This dedication to quality and accuracy makes KeyChord an indispensable tool for anyone serious about music theory and piano practice.

KeyChord supports a wide range of formats, accommodating different learning styles and preferences. Whether you prefer note names, intervals, or staff views, the app provides multiple ways to visualize and understand musical concepts.

In addition to its versatile display options, KeyChord includes a fully functional 88-key multitouch piano. This feature allows users to experiment with different sounds and compositions directly within the app, enhancing the learning experience.

The inclusion of Mini Piano Pro further expands format compatibility by offering 128 unique sounds and MIDI recording capabilities. Users can save their creations as ringtones or share them with others.

By combining theoretical knowledge with practical application, KeyChord ensures that musicians have everything they need in one convenient package, regardless of their preferred learning format.