Special October Challenge.

We appreciate all our users and that is why we are giving away different Windows Phone devices every month to developers that start using AdDuplex to promote their apps for free. This month is not an exception. The winner of this months challenge will be able to chose between Lumia 1520, Lumia 930 and HTC One (M8). So how to win one of these great devices?

Last time we didn’t ask you to do any special activities to win a high-end Windows Phone device. It was all about your app or game. We decided to continue that type of competition but in more specific way as it brings the real value for developers.

To become a winner of the October challenge you should publish your app (everything that is not a game) through AdDuplex cross-promotion network to advertise it for free and your app should comply with these two requirements: it has at least 100 reviews and average rating of 3.5* or more across all markets in the Store.

So publish your app during the month of October and you might become the master of Lumia 1520, Lumia 930 or HTC One (M8).

Publish Your App competition.

As always we have two more Windows Phone devices for two random developers that start using AdDuplex to promote their apps or games for free. So this month you are able to win these great freshly released phones:

• Nokia Lumia 530
• Nokia Lumia 730.

Just submit your apps or games using AdDuplex cross-promotion network by the end of October and one of devices listed above might be yours.