Greystripe partnership is paying off.
iOS developer MobilityWare made nearly $300,000 of revenues in June alone from its 17 apps for iPhone, iPod touch and iPad.
Even more startlingly, that $298,308 - to be specific - came from in-app advertising.
The money was made from ad units provided by Greystripe, according to VentureBeat.
Ad-supported apps are clearly a lucrative business for MobilityWare at the moment, and the figure has clearly been announced to show that there's life beyond iAds on iPhone.
Developers are hungry for any data to help them decide how viable an ad-supported business is.
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Last month, iOS developer Justin Ting said he earned $1,372.20 from iAds in the 9,000 downloads of his LED flashlight app.
Meanwhile, AdMob has talked about developer Backflip Studios making $100,000 a month from its ad units, and another firm - Moblio - making tens of thousands of dollars a week during the World Cup from ads in its Vuvuzela 2010 app.
