Is it a valid word?
Look up any word in the 172,727-word dictionary Popple plays with (the ENABLE list, the same one behind many popular word games). You'll see whether it counts, what it scores on each grid size, how rare it is, and which anagrams share its letters.
Word lists
Most found words in real games
Straight from actual Popple matches — the words players trace most often, with how many times each has been found.