Voyager is an interface that's easier to use for the devs, and much easier for the end-users.
I used it to validate my an algorithm written in python, which was basically a many-step series of matrix multiplications
datanitro basically served as a debugger, letting me 'show my work' at each step in the algorithm, outputting matrices to excel spreadsheets as it ran. Excel provides a pretty good set for validating that the output at each step matched expectations, like conditional formatting where you can color cells based on their value and other math and graphing functionality
I can say for sure that I prefer using python with excel to using VBA, the only other previous option.
A big advantage of Voyager over both of those options is the ability to send custom data per-user without building an ad-hoc web UI for it.
We'd like to get as much feedback as possible, and we have a special offer going on towards that end: free service with unlimited users until April. We'll also build out your integration for you if you'd like us to.
If you think this'd be helpful for your company, leave a message here or email me at ben@datanitro.com.