The latest Apple App Store charts give an indication of how popular gambling-related products are, with four out of the top ten titles in the best grossing category coming from gambling software firms, reports the publication Softpedia.

These are the four gambling apps that are proving popular with a wide range of Apple mobile fans:

DoubleDown Casino
Big Fish Casino
GSN Casino
Bingo Bash HD

Softpedia points out that whilst the top grossing accolade may not be entirely indicative of the download trends on iOS, it confirms the fact that mobile users like to play casino games, and they are prepared to spend in order to do so.