[wonnage]

That's not terrible for a dictionary where you control what you're looking up. I found poor segmentation to be way more annoying when trying to do stuff like selecting words for highlighting on my Kindle - it invariably breaks up a chengyu or selects nonsensical groups of words. Same with the Mac 3d touch quick look.

[thaumasiotes]

But that's the same interface every time. You select a character and a lookup pops up. The Pleco controls are "touch a character to pop up an entry", "move end of selection window left", "move end of selection window right", "jump to previous 'word'", and "jump to next 'word'". The popup will display an entry for whatever is the longest prefix of the selection window that has an entry. How do your touch interfaces differ?