| Free | Premium | |
| Chord Input Assistance | L | L |
| Chord Visualization | L | L |
| Copy Chord Image | L | L |
| On-Chord Input | L | L |
| Chord Notation Conversion | L | L |
| Chord Display Settings | L | L |
| Chord Playback | L | |
| Arpeggio Playback | L | |
| Transpose | L | |
| Input History | L | |
| Add to Favorites | L | |
| Copy Chord Image Without Logo | L | |
| Slide Input | L | |
| Degree Labels on Piano Chord Visualization | L |
If you encounter any issues or have feature requests, please let us know.