Aberystwyth University's professor Chris Price organised the iOS Dev UK event, which expects more than 170 delegates from Europe and the US.
Price said: "When Apple launched their iPhone App Store they started a revolution in mobile phones. Before that date very few people expected their phone to be able to do anything except make phone calls, send texts or maybe surf the web.
"The UK has been making a contribution to this growing industry, with healthy numbers of apps being created and sold. The aim of this conference is to bring together the people in the UK that are actively causing this revolution, and to share experience to make us more competitive in building apps that are changing the world."
Speakers include Dave Addey, managing director of Agant, which developed the award-winning UK Train Times app; and Dave Wiskus, chief creative officer of US-based firm Black Pixel.