The author mentions it right after the introduction, with no criticism whatsoever, only praise. Unlike the rest of the piece which is more balanced. It certainly set the advertisement alarm bells ringing in my mind.
> After meeting the founders last summer during their YC batch, I’ve been pretty consistently using the app InFlow, which I described to a friend as “super chill easy cognitive behavioural skill-building around ADHD.” I feel like I’ve made real progress using it.
This blog post reads like an advertisement for InFlow (YC S21), which was roundly criticized for being exploitative of people with ADHD, when it was posted to HN last year: https://news.ycombinator.com/item?id=28877003
[Edit: the author has clarified below that this wasn't actually an advertisement, she just enjoyed the app. I'm sorry for jumping to conclusions and overreacting and ranting about it. My apologies for writing all the bullshit above and below.]