Viable AF is described as 'Get a unique score on names for your business venture with Viable. Pulling data from Domainr, Markify (trademark registration), the App Store, Product Hunt, and Angel List, it calculates a score to help you get an idea for how viable your ideas for names may be'. There are five alternatives to Viable AF for Online / Web-based, iPhone and iPad. The best alternative is BrandHunt, which is free. Other great apps like Viable AF are Startup name check (Freemium), Startup Validator (Free), The Name App (Free) and Launchaco (Free).
Launchaco is a full-featured branding tool that lets you check for the availability of your ideal brand or product name across the web and multiple networks, while also providing helpful alternatives and simple designs to help fuel creative ideas.