Answer:

APP

Answer	Crossword Clue
APP	Guesstimate abbr.
APP	Computer program, for short
APP	Computer program, informally

APP	Droid download
APP	Planner abbr.
APP	Tinder or Grindr
APP	Play store purchase
APP	Program, for short
APP	Spreadsheet, e.g.
APP	PC program
APP	iPhone download

APP	Smartphone download
APP	Google Play purchase
APP	Flappy Bird, for one
APP	Tablet download
APP	Plants vs. Zombies, e.g.
APP	Killer ...: powerful software
APP	Software program, briefly
APP	Programmer's solution, briefly

APP	Droid download, say
APP	Killer ..: powerful software
APP	iPhone add-on
APP	Words With Friends, e.g.
APP	Common 99-cent buy
APP	Mobile ..
APP	"Angry Birds," e.g.
APP	Trivia Crack, e.g.

APP	Software solution, for short
APP	"Killer" PC program
APP	Killer ... (cool program)
APP	"Killer" computer program
APP	PC program, briefly
APP	Killer ...
APP	Software program, in brief
APP	Android download, briefly

APP	Smartphone program, briefly
APP	Phone program, for short
APP	Software prog.
APP	There's this for that
APP	iPhone program, briefly