Who's the target audience?
People with multiple plants
Each plant has a different watering schedule
A reminder app to remind one of watering the plant
Can I make this?
Yes, probably a weekend
Are they spending money on it / Whats the substitute?
No, nor would they likely start to pay for it
How will I get the first 25/250 customers?
If it works, will it be sustainable?
Am I the person to build this business?