Posterly

App description:

Hey there! Want to give your clients the power to create their own unique products? With Posterly, you can provide them with a fully personalized shopping experience. You get to choose which parts of your designs they can customize, so the possibilities are endless. And the best part? No more hassle of manually exchanging files from Photoshop – Posterly takes care of it all by automatically ripping the final print file. How cool is that?