A huge number of gambling operators now offer customers to experience their betting sites via their mobile phones and tablets. Mobile/tablet users can usually access their favourite betting sites either via a dedicated app, or through a mobile site that can be accessed via a browser. A gambling operator having a dedicated mobile app could be the difference between a customer signing up with them, and going elsewhere. Our 21.com review Canada will leave you in no doubt as to whether or not 21.com can be accessed and played via mobile. You never know, you may even find out that 21.com offers an app-only bonus too!