• Improved Sound Engine stability. • Fixed some appearance problems. • Optimized for iOS 17 and iPadOS 17 and later.

• Added descriptions of N.C., Cliche, and Guess Chord Name function to Chord Hint section of Help tab. • Resolved a rare crash problem.

• Added Chord Hint section in Help tab. It will be very helpful in understanding Chord, Key, Chord Progression, Voicing, Omit Notes. • Added Japanese localization to Chord Hint, Simple Help Text sections. • Added iOS 17 official support. • Other minor improvements have been made.

• Optimized for iOS 15 and later.

• Changed the handling of Progression Tab greatly. • Improved stability of Delete button in Progression Tab. • Many other minor improvements have been made.

• Fixed an issue on iOS 16 where after recording with microphone, the recorded sound could not be played until the popup window was reopened. • Fixed interval display of Chord dim(b13). • Added iOS 16 official support.

The following changes have been made to Chord Progression. • Added Pad Mode. Users can focus on playing by tapping square Pad. • When there is no selection in Chord Progression, the Chord user taps in Chord Picker will be added now. • Added “1 Bar Beats” to the “All” section of Beat Menu. All chord forms can now be reset to default beats count with a single operation. • Organized Title Menu. • Rewritten to completely new UI engine for Chords list. • Improved management of Undo and Redo for Chord Picker. • Solved the problem of noise when exporting. • Improved management of Play button. • Made Beat Count label easier to see.

• Expanded expression of Chord Name search engine. Now supports major, maj, Δ, minor, min, - for M or m. (Limitation: always “+” is recognized as “#”. And “Root #5” prefix is recognized as “Root aug” prefix.) • Changed all text field settings for usability. Now Auto Correction and Spell Checking to OFF. It’ll support better experience of inputting Chord Name. Unwanted system menus are no longer displayed. • Fixed an issue that #5 of aug was mistaken for 6 in some cases.

• Added iOS 15 and iPad OS 15 official support. • Optimized for iOS 14 and later. • Fixed some minor issues.

• Moved Chord Progression to independent Tab. • Integrated Chord Rule into Key Tab. • Combined Chord Rule options to None, Triad & Seventh and Substitute for Major Key / Minor Key simply. • Changed UI of Play Settings and Export Settings radically. • Rewritten Help text in app completely. • Improved layout of popup menus and more. • Improved layout Circle of 5th for iPhone. • Implemented shortcut gesture for undo and redo in Chord Progression. Now users can undo and redo with swipe left or right gesture on Title Menu. • Implemented Reset One Time Dialog function. • Implemented independent accident and volume of Chord Progression. • Changed order of Similar Note list to Move, Remove, Add to improve practically. • Implemented volume slider of Customize Chord View for Chord Progression. • Changed name of Use Chords to Limit Chords. • Optimized for iOS 13, iPadOS 13 and later. • In addition, many improvements have been made to reliability, usability and durability.

• Solved the problem that C was set as Root in Chord Tab when Cb was selected in Key Tab. Currently display as B.

• Enhanced resolution of score graphics on Key Tab.

• Fixed truncated text of Tap Mode button for iOS 13.

• Improved reorder handle of editable list for iOS 13 Light Mode.

• Fixed some issues.

• Now automatically download the file with cloud mark in Files app. You can import Native File by tapping the file simply.

• Supported iOS 13, iOS 13.1 and iPadOS 13.1 • Supported new iPhone and iPad in 2019. • Supported Dark Mode and Light Mode. • Fixed the problem that exported files could not be imported. (Please copy or download by long press gesture, If you find cloud mark on Native Files in Files app) • Fixed the problem that Navigation Bar of Chord Progression View might be displayed unexpectedly. • Fixed other issues.

• Changed color and font of Count Label on Chord Progression View. • Changed size of Accidental Button on Scale Match View.

• Improved color, layout and tapping range of many UI objects. • Improved graph of the pitch analyzer to show more detail. • Fixed other minor issues.

• Fixed the problem that caused Navigation Bar to disappear when canceling the Edge Swipe operation.

• Removed unwanted feedback loops from built-in speakers in recording mode. This also helps with more accurate pitch detection.

• Upgraded internal instruments. Remastered all sounds as 24-bit high-resolution format. And assigned new sounds for all keys to remove phase gaps. • Improved internal reverb effect in Sound Engine.

• Pitch Analyzer can now change its speed during playback. Slowing down during playback will make the pitch easier to decide. • Fixed the problem that crashes by Siri's interrupt when Pitch Analyzer is displayed. • Changed other minor things.

• Fixed a problem that Record button doesn't set disable when you play by tapping waveform.

• Implemented new Sound Engine with the modern architecture. This engine provides stability and superior performance. It will be the foundation for future updates. • Added the feature that record your singing melody and display the pitch.