I've been working on a small iPhone app called PolyNap.  
  
  
The niche is weirdly specific: it's for people experimenting with biphasic or polyphasic sleep schedules.  
  
  
What pushed me to build it was noticing that most sleep apps do one of two things well:  
  
  
1. They track sleep after the fact.  
2. They focus on general wellness.  
  
  
But if you're actually trying to follow a structured routine like Everyman, Biphasic, Segmented, or even just a serious nap-based schedule, the real problem is different:  
  
  
\- Which schedule is realistic for me?  
\- How do I see the whole day clearly?  
\- How do I stay on time for naps?  
\- How do I know whether I'm adapting or just failing randomly?  
  
  
So I built PolyNap around schedule recommendation, timeline clarity, alarms/reminders, and adherence tracking.  
  
  
It's still a very niche product, which is exactly why positioning it has been tricky. If I make it broader, it starts sounding like every generic sleep app. If I make it too specific, people assume it's only for extreme Uberman users.  
  
  
That's the problem I'm trying to solve right now:  
  
  
how do you market a niche product clearly without making it sound either too broad or too extreme?  
  
  
If anyone here has built for a weirdly specific niche, I'd love to know how you handled the messaging layer.

I turned a weird niche obsession into an iPhone app: helping people actually follow biphasic/polyphasic sleep schedules