Creating a cookie cutter from any shape is simple using this app. Use a shape from the app library or upload your own. 

You can create a cookie cutter and download it to a STL file for 3D printing.

There are lots of options for sizing your cookie cutter and adding a cutting edge. You can even add a "donut hole" to your cutter.

You can also create a word or imprint stamp. Choosing from many different fonts and sizes.

Additional features include bead rollers, alphabet stamps and line texture rollers

A new feature gives access to millions of images useful for making cookie cutters. This subscription feature is called "3D Cookie Cutter - search millions of images"
Subscription duration: 1 month
Subscription price: $1.49USD
Auto-renew: This is an auto-renewing subscription and payment will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period.
• Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase.
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
• Privacy policy: http://horsebytes.ca/polymerclay/#privacy.