1. ISO/IEC 9126 SnapchatInstagramFacebookTwitterWhatsApp FUNCTIONALITYEphemeral Messaging; Constasharing Videos/Photos *Beta- Emojis/Filters Video/Photo Sharing and Database; Digital Image Filtering; Share Status Updates/Photos/Links/Check-In; Messaging; Advertising Public Discussion Forum; Micro-blogging; Private Messaging Mobile Messaging Application, Photo & Video Sharing FeaturesEphemeral Messaging: Photo/ 9s.Video&Audio; Drawing/Caption/Timer; 24 hr. Snapchat Stories Feed & Views; Bestfriends; Score; Add/Invite Friends from Contact List; Banner/In App notifications *Beta- Emojis/Filters/Special Text/Front-Flash Camera/Special Text/Replay Sharing: Photos/3-15s.Video&Audio/Gallery Image; Newsfeed: Posts; Commenting; Liking; Tagging; Hash- Tagging; Photo Map(location-based); Banner/In App notifications; Explore Public Posts; Share: Facebook/Twitter/Tumblr/Flickr/Foursquare; Following/Followers; Public/Private; Direct Messaging: Photo/Video & Caption/ Instagram Filter; Notifications: View What Following Likes; Profile Pic/Caption; Emojis; Search/Add Friends Thru Facebook Sharing Status/Photos/Videos/Links/Check-In; News Feed: Status Posts/Activity/Advertising; Profile; Messaging; Commenting; Liking; Tagging; Hash- tagging; Banner/In App Notifications; Search/Add Friends & People You May Know; Groups; Facebook Apps; Privacy/Account Setting; Emojis News Feed: Tweets/Activity; Discover: Trending/Popular/Suggested People; Emojis; Tagging; Hash-Tagging; Favoriting; Retweeting; Banner/InApp Notifications; Search/Add: Friends/Organizations/Celebs/News/Entertainment; Direct Messaging: Camera Photo & Filter/Gallery Image & Twitter Filter; Banner/InApp Notifications Direct Messaging: Text/Camera Photo & Filter/Video/GalleryImages/Audio/Contact; Emojis; Add/Invite Friend Thru Contact List; Profile Pic/Caption; Network Usage Statistics; Carrier based phone calls; Conversation History; Banner/InApp/Popup Notifications; Groups; Share: Facebook/Instagram/Twitter/Email InteroperabilityMobile: Android phones/most tablets, iOS- iPhone/iTouch Mobile: Android phones, iOS- iPhone/iTouch; Web Browser Mobile: Android phones/tablets, iOS- iPhone/iTouch/iPad; Web Browser Mobile: Android phones/tablets, iOS- iPhone/iTouch/iPad, Windows/Nokia/Blackberry Phones; Web Browser Mobile: Android phones, iOS-iPhone/iTouch, Windows/Nokia/Blackberry Phones USABILITY Understandability3 Screens, Concise InterfaceNewsfeed Easy to Understand, Direct Messaging Symbol is ambiguous Newsfeed Scroll, Hidden chat & additional FeaturesCan’t Tell if logo is a button, Retweet/Reply Buttons are confusing to New User Extremely Simple UI with default settings Learn bilityEasy to learn for young children and older adults, Opening Videos/Pics is confusing at first Direct Messaging/ Explore Icons Confusing, Self Exclamatory Confusing Process to Post Camera Photo, Notifications Icon may confuse new user, +Advanced Features & Settings Hidden Can’t Tell if logo is a button, Retweet/Reply Buttons are confusing to New User Simple, Many Advanced Settings User Can Set, But Are Hidden OperabilityQuick & Easy Work Flow, Simple Gestures, Home screen-Camera/Notifications, Yellow LED Light Home Screen- Newsfeed/Notifications/Take pictureHome screen-Post Status/Notifications/NewsfeedHome Screen- Newsfeed/TweetHome Screen- Conversation History AttractivenessUI- extremely simple/clean/easy, works for target demographic UI- Sleek, Sophisticated, EasyUI- Simple, Clean, Easy to UseUI- Crowded, Confusing, Complicated- Too Many small buttons in close proximity/Too Few Tweets (Makes Angry & Confused) UI-Simple, Clean, Easy to Restart Conversation EFFICIENCY Startup3 sec., Ghostface Chillah Splash Screen2 sec., White Splash Screen6 sec., Black Splash Screen4 sec., White Splash Screen1 sec., No Splash Screen Min. Time Consumption3 sec./5 taps to take and send photo11 sec./7 taps to take and send photo7 sec./8 taps to take and send photo9 secs./8 taps to take and send photo via Direct Message 6 sec./6 taps to take and send photo Resource ConsumptionCamera/Speakers/Mic, WiFi or mobile data, Memory, Contacts, Battery, Flash, Vibration Camera/Speakers/Mic, WiFi or Mobile Data, GPS, Contacts, Memory, Battery Camera/Speakers/Mic, WiFi or mobile data, GPS, Memory, Vibration, Battery, Phone(Carrier) Camera, WiFi or mobile data, SMS(Carrier), GPS, Contacts, Memory, Battery, Vibration Camera/Speakers/Mic, WiFi or Mobile Data, GPS, SMS(Carrier), Phone(Carrier), Contacts, Vibration, Memory, Battery INSTALLABILITY Memory7.35 MB17.00 MB17.68 MB11.27 MB12.33 MB Sign UpEmail, password, birthdayRegister with Facebook or Email; Username, Password, Phone# optional Mobile Web Browser- First Name, Last Name, Email or Phone #, Gender, Birthday, New Password Full Name, Email, Username, PasswordPhone # Sign InUsername/Email & Password Email/Phone# & PasswordUsername/Email & PasswordNone