The Lady apple is an apple ‘oddity’ due to their size. They are small and adorable. I could fit three in my hand.
Asides from aesthetics the Lady apple is crunchy, yet not crispy. The crunch was dry. The Lady apple does not have much juice nor flavor. Little bits of sweetness lurk somewhere, among occasional bitter notes that stem from the skin.
Asides from the size, the Lady Apple is rather unremarkable.
Single Lady Apple 
Three Lady apples in my hand
Additional Reading
- Orange Pippin Page
- Apples of Uncommon Character by Rowan Jacobsen has a page for the Lady apple that goes into their interesting history and usage.
Update 11/2019: Added captions, tweaked first line to be more descriptive in why I perceived them as odd (i.e. the size), added Orange Pippin link + Rowan Jacobsen book suggestion.