If the issuer/retailer of the coupon or card allows it, it is possible to forward coupons and punch cards. In this case you can save punches together on one punch card for example. This can be done in two ways.
The first way is to click on the share-icon in the summary screen at the bottom of the coupon or punch card.
The second way is by clicking on the coupon or punch card and then clicking the share-icon in the top right corner.After you clicked, a bar is shown with the option to forward it. Click here. Enter the appropriate phone number or email address or select by clicking on the plus button from someone from your contact list.
You have the option to write a message to the recipient which you can send along. Once you've filled in all the fields, click "send" in the upper right corner. The coupon or punch card will be removed from your OK app from here and sent to the desired person.