- Offer something in return for signing up. List of top ten funny "oops" chat mistakes, coupon for half off the app for you and a friend, free how-to guide to d

- Offer something in return for signing up. List of top ten funny "oops" chat mistakes, coupon for half off the app for you and a friend, free how-to guide to disable autocorrect, whatever. But offer value in exchange for the email. Your button should not say "Gimme your email" but "Get free awesome thing!" - Once you have the email, keep in touch. Send regular (but not spammy/salesy) updates. Include a joke or something with each. Make these people like you, remember you, trust you. Maybe even get them to invite friends. - After this, THEN go into sales mode. THEN show the price, list the benefits, and offer to sell it.