10 Million Beta Users Later – Vessel.io Goes Live 11 years ago 1 min read BrandingBusinessStartupsdomains for startupsstartup domainsstartupsvesselvessel.io [http://www.vessel.io]Test, test, and test again. That’s exactly what Mobile A/B Testing platform Vessel.io [http://www.vessel.io] did to the tune of 10 million beta users.