Question Summary:
Displaying ads on an Android app

Question Detail:

The following android application https://play.google.com/store/apps/details?id=com.gigs.manzilfree&hl=en The app is free to download but i use startapp ad network to put ads in my application. I have noticed that sometimes(less than 10%) times they show ad of a haram application like poker. In this scenario if i contribute 20% of my total revenues as sadqa(to be on the safe side) will my income be halal.

Answer :

In the Name of Allāh, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
We commend you on your sensitivity to conform to the laws of Shar‘iah in acquiring halāl income.
The appearance of harām ads on your app will contaminate your income with harām money. Furthermore, based on our understanding and according to some, an app developer is able to choose/remove any ad he dislikes with StartApp.^[1] You should further research this issue with StartApp.
However, if this is not feasible, then our advice is that you discontinue to display ads through StartApp. In adopting the method of displaying ads on one’s app, there will always be the possibility of ads of harām content being displayed. If such is the case then one should only develop an app that will be ad-free. 
 
And Allah Ta‘āla Knows Best
Fahad Abdul Wahab
Student Darul Iftaa
USA
Checked and Approved by,
Mufti Ebrahim Desai                                                                                                                                                                                                                
www.Daruliftaa.net