If you have a iPhone and have updated to the new iOS 8, you can use the updated Groupon app to save $5 off your next $15 Groupon purchase.
No coupon code is needed. The $5 will be automatically deducted from your purchase price.
This offer ends at midnight on Oct. 10, 2014.
Saving with 6abc: Save $5 off $15 with Groupon app