What are some alternatives?
When comparing Landing Pages by Viral Loops and Voicer, you can also consider the following products
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Carrd - Simple, responsive one-page site creator.
1mbsite - Create and share a website under 1 megabyte with the world
SaaS Pages - 900+ Screenshots of the best SaaS landing pages
Slides 4 - Create impressive animated websites in minutes. 😻
Viral Loops for Startups - Virality for startups made easy 💪