CosmoCalc vs Engagefully

CosmoCalc is a simple cosmological distance calculator. With a simple and intuitive interface you can quickly set a reference cosmology and redshift, and CosmoCalc will calculate a full suite of astronomical distances and scales. CosmoCalc is a useful and educational reference tool for astronomers, astronomy students, and anybody interested in calculating the distance to astronomical sources. CosmoCalc allows you to: * Select cosmological parameters H_0, Ω_m, and Ω_Λ with simple touch-screen controls * Easily choose from common reference cosmologies, including Planck 2013, WMAP9, Concordance, and Einstein-deSitter * Quickly determine the luminosity distance, angular diameter distance, lookback time, age of the Universe, comoving volume, and critical density * Easily switch between flat and non-flat cosmologies by clicking on the chain

Engagefully is a year-round engagement and event app designed to deliver personal and relevant content, facilitate networking and action, enable a direct line of communication, and amplify your event experience. Engagefully supports syncing across multiple devices, so you can view your selections across your smartphone and tablet. The best way to experience Engagefully is to jump in and explore: • Association — Access member benefits, latest news and resources, and events • Connections — Receive alerts, view and participate in social media, message colleagues • Dashboard — See your personal event schedules/agendas, reminders, and event updates • Timeline — View and swap ideas, photos and lessons learned • Schedule/Agenda — Search event sessions and speakers, create itineraries, download handouts, take notes, and make appointments • Directory — Create your personal profile, search for and message other event attendees/delegates • Exhibitors/Sponsors — Search, filter, mark companies to visit, contact and take notes • Custom Menu Items — Access event destination information, complete surveys, and more For app administrators, Engagefully provides: • Branding — Manage your app logos/icons, colors, features, and menu text to meet your specific needs • Backoffice Portal — Manage all app branding and content through a responsive web portal complete with “how to” tutorials and marketing resources • Integration — Integrate your app with your AMS/CRM and other systems • Revenue Generation — Leverage paid ad banners, push notifications, and beacon opportunities to pay for your app and generate revenue