On advice of members here I'm going with prime while my tank is cycling to help my fishies instead of the aquasafe... will this harm my apple snail?

I did a little bit of searching here, and found that others use Prime for their tanks that also have apple snails.
Perhaps you'll hear from some of them soon, but from what I've read - it's fine.

Debbie

Yep, I use Prime for my snail tank as well as my gf and ADF tanks. It's fine

Prime is perfectly safe for use in all of your tanks. IMO it is the best water conditioner out there.

Prime is the conditioner of choice for shrimp keepers. Shrimp are much more sensative to water conditions than snails and fish.