I enjoy hearing everyones app ideas and pointing them in the right direction.
Before I invest significant time on an idea these are the steps that should be done to reduce the risk of the idea.
Competition Research - Feature Comparison
Who is your Customer?
Market Research
Pitch scripts
Competition Research - Feature Comparison
...there is nothing new under the sun.
It is rare that a completely fresh idea comes around. Sure, no one is doing what you are considering, but what is close.
What are people doing today, wvwn without technology.