I don't know what Chessable is like. My understanding is, if it has an engine then it's not allowed and if it is same kind of database than chess.com explorer, then it is allowed. I hope someone can confirm.
Chessable Opening Explorer
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Oct 12, 2023
0
#3
It is quite similar, but it shows the moves the author included
in his course.
Oct 12, 2023
0
#4
So it seems to have a smaller selection of lines that a human has chosen. My opinion is it's allowed as it is very similar to chess.com explorer.
Is the chessable opening Explorer allowed in Daily Matches?