I use Elevatr. Right now it's only available as an iOS app. It's specifically tailored to entrepreneurs as you have to input a few key aspects every idea should

I use Elevatr. Right now it's only available as an iOS app. It's specifically tailored to entrepreneurs as you have to input a few key aspects every idea should have, namely market fit, product features, pain, value proposition, etc. They recently introduced an interesting feature where you can "Make Moves" on your startup - I clicked the button, and a few days later they reached out to me to discuss my startup and how they could help connect me to app developers in New York City.