Google is hopping aboard the Labor Day deals train with the launch of their “End of Summer” sale in the Google Play Store. Twenty apps and games, including among others the popular keyboard app SwiftKey, have been marked down to $0.99. If you’re in the mood for a bit of an apps shopping spree, this weekend looks like the time to let loose. Our guess is the sale will only last through the end of the long weekend, so act fast if you want to take advantage of some killer deals.