In case you don’t know, National Novel Writing Month is November ever year at https://nanowrimo.org/ and millions of writers try out different software to write their 50,000 words in a month.
Various people like Scrivener, Pro Writing Aid, etc., do an offer for participants, with deals for those who succeed too.
I mentioned PA over there and nobody had heard of it. Maybe an opportunity for a Promotion?
The Free version is perfect for many people taking part in the event, and who knows how many might upgrade after using it for a while. Just a thought.
Besides, if you get an extra hundred thousand subscribers, maybe the subs could go a bit lower.