We ran them through the front end of our product and how it works from top to tail, discussing why we made certain product decisions.
Almost everything they could have seen as a user of our app but a few things that were admin functions.
A bunch of it they could have used to build their own app but we figured that was pretty unlikely.
They asked for a few things we did disclose like: - team size / locations / education - revenue (we didn't need to disclose but we did)
They also asked for a few things we didn't disclose like: - cap table - how much we had raised - what our last valuation was.
We kept it on a need to know basis - the above is irrelevant to them pricing the company.