[lrmunoz]

Sorry for the shameless plug, but just by coincidence, I have recently started building a simple NPS tool. Currently it's only a landing page, but I'd appreciate anyone interested to subscribe: https://nps.io

I have extensive experience applying the NPS to the hospitality industry, and I can tell you that it's not a marketing gimmick as I have read in some other comments. That's why I decided to roll my own service :-)