SmileOnMyMac has released PDFpen 3.3, the latest version of its PDF editing and form-filling tool for Mac OS X. The update adds greater compatibility with Adobe Acrobat mark-up by displaying additional drawn annotations, including stamps. It also features a new preference to lock large images automatically, simplifying the task of editing scanned document pages, which are images. All the new features of PDFpen 3.3 have also been added to PDFpenPro 3.3, the Pro version that has the ability create fillable PDF forms in addition to all the features of PDFpen. PDFpen is priced at US$49.95 and PDFpenPro costs $94.95.