I never heard about it but it sounds interesting...
To be honest this is the only major writing project I'm busy with at the moment, and I plan to publish it as a physical book once finished and all the chapters have been uploaded here...
But please do point me in the direction of freewrite :)
These are the ones I have seen in the past = D
https://steemit.com/freewrite/@mariannewest/day-94-5-minute-freewrite-monday-prompt-a-kiss