Advertising is how we support the development and delivery of the free version of Spider.

If you prefer to play our game without ads, we also offer a paid version of Spider Solitaire for $4.99 with no advertising. You can download the paid version Spider Solitaire here - https://itunes.apple.com/us/app/spider-solitaire-mobilityware/id391855805

If you do purchase it, a separate install of paid Spider will be installed. The free version will not be overwritten or removed as it is a separate application.

Just note that if you do purchase it for $4.99, that the statistics are not transferred over as Apple treats every application independently, so you will start fresh.