In March we put up a landing page to test interest re: a web app that turns multiple Internet devices into a stereo system (all play same audio/same time).
We got a lot of sign ups, but upon release 3 months later that same level of interest isn't there. Even after sending out invites.
What's suggested after the whole test your idea via a landing page doesn't work out?
Ask for pre-orders. In my experience I've found a substantial difference between "yeah, that sounds great I'd probably buy it" and... "here is my credit card". You'll find that even if you collect a large list of emails from people that said they would buy your product, when it is time to ask them to make the purchase the majority of them will come up with objections and reasons why now is not the right time.
With pre-orders you have people that have given the ultimate commitment and you can offer them a discount and/or the ability to help shape the product through it's development.
A simple billing page with something like Stripe checkout (https://stripe.com/docs/checkout) will help you filter out the tire kickers and attract people with a burning need for your product/service.
We got a lot of sign ups, but upon release 3 months later that same level of interest isn't there. Even after sending out invites.
What's suggested after the whole test your idea via a landing page doesn't work out?