Oh wow, what a pleasant surprise.
I bode-plotted on my RTB2004 a lot, but it required an elaborate setup with an external function generator (since I couldn't make the scope trigger on its internal one). On top of that, it only became really viable with the latest firmware's overhauled FFT, since that finally allowed me to view/adjust the actual window of the captured data to analyze in the FFT.
Still, it was time-consuming and error-prone, so I can't wait to try out that app instead. Sent you a PM.