Unfortunately it doesn’t look like Monzo will be creating one in the near term. It appears they’re focusing on getting parity with the legacy banks (based on their public roadmap).
I imagine it’s something they will do in the future, though.
For now, if you want to export transaction data as spreadsheets, you can (if you’re on iOS, I have no idea how to do this on Android)… Click the Search Icon and choose a set of transactions you want to export, then click the Share button and choose CSV.
Monzo has more features than pots and graphs. I think it’s a bit presumptuous to say it doesn’t sound like they want or need any of the features Monzo has, when they’ve listed only two.