> What price would you feel comfortable paying for Pi?
After reading through the website and watching the product video, I'd be willing to pay $15-20 to try it out and see how many of my productivity problems it can fix.
> Would a free trial make the $70 price point more reasonable for you?
Free trial would definitely help me evaluate all the features, and if they're worth more for me. I can see that if the app is a hit, it's worth $70 for me. But at this point I fear that it's not perfect, so $15-20 is something I'm willing to throw away to see if the app fits.
> Would your rather pay a subscription?
I have a personal problem with all subscription models: I instantly calculate what using the app will cost in 3 years to get perspective.
Now if you'd set $6/month as your price point (to match $70/year), I'd see it as committing to $210 over three-year period.
I know some people don't see subscription models as scary as I do, and it's a really common way to lower the bar to purchase things nowadays. But I'm very cautious of anything subscription-based.