Out of your own personal experience : which mobile app you found most helpful ?

Agree with expert ansewrs above

most  useful program Facebook I find pastry material

 thanks for the invitation, I  agree with all answers

Thank you Mr. Sayed Fathy for the question. Well it depends on personal needs. There are many apps for different fields. People used these apps for their eas and quick information. For example you need to travel find best airlines. you want to deal with foreign buyer, need to know the currency rates add exchange app. You are looking the location quickly open the google maps. Now a days there are many apps helps you for your desires. 

Thanks invite. ..........no increase answer frinds 

Honestly i can mention a few for instance bible application, dictionary application & my fitness application.

Thanx for the invitation

Mail applications, banking applications