It can be hard to miss an outdoor weather due to the weather
Who's the target audience?
Running enthusaistis with a free schedule
Create an app that tells you what's the best time of the day to go for a run
Can I make this?
Are people currently spending money on it?
How will I get the first 25/250 customers?
Running community forums, subreddits, seo
If it works, will it be sustainable?
Am I the person to build this business?