Other Credit Card Programs - Do instant approvals for credit cards show up as an inquiry?

I got approved for a Hilton Amex on sunday and truecredit still does not show an inquiry on my credit report.

Yes, it'll show up, just not quite immediately. Give it 30 days or so.

Are you looking at all three of your reports on true credit? They recently changed their update option to let you run a comparison report of only your TU report, or update all three. It is easy to miss that you are not updating EX and EQ if you don't look. Amex pulls Experian for me, so I would not see it if I was using the comparison option.

My inquiries always show up within minutes. It is remotely possible that Amex did a soft pull if you are an existing customer, but I doubt it.

True credit also shows an EQ pull from Ameriprise insurance, but Equifax themselves show it as a soft pull. True credit is goofy at times.