Answer: APP

AnswerCrossword Clue
APPPC program, briefly
APPiPhone add-on
APPWords With Friends, e.g.
APPCommon 99-cent buy
APPMobile ..
APP"Angry Birds," e.g.
APPTrivia Crack, e.g.
APPSoftware solution, for short
APP"Killer" PC program
APPKiller ... (cool program)
APP"Killer" computer program
APPKiller ..: powerful software
APPKiller ...
APPSoftware program, in brief
APPAndroid download, briefly
APPSmartphone program, briefly
APPPhone program, for short
APPSoftware prog.
APPThere's this for that
APPiPhone program, briefly
appapplication; application program
APPiPhone download
APPComputer program, for short
APPComputer program, informally
APPDroid download
APPPlanner abbr.
APPTinder or Grindr
APPPlay store purchase
APPProgram, for short
APPSpreadsheet, e.g.
APPPC program
APPGuesstimate abbr.
APPSmartphone download
APPGoogle Play purchase
APPFlappy Bird, for one
APPTablet download
APPPlants vs. Zombies, e.g.
APPKiller ...: powerful software
APPSoftware program, briefly
APPProgrammer's solution, briefly