A compatible iPad will fit in the Osmo Large Carrying Case, but will not fit in the Osmo Small Carrying Case.
For reference, the neoprene pouch in the Osmo Large Carrying Case can fit either a compatible iPad, or the Osmo Creative Board. However, the case cannot fit both an iPad and the Creative Board at the same time.
Here is more information about the size differences between the two Osmo Carrying Cases.