ThatPDF is a powerful document signing and sharing tool for your iPad that uses the INK interface and tools to streamline the process of downloading, signing, annotating, and sending documents. While there are some tools missing here that other PDF tools offer, the ones that are here work quite well and offer a range of options in a clean, easy-to-use interface.
ThatPDF, like other INK apps, looks very good. The clean, iOS 7-style design is smooth, fast, and looks great. It also makes finding core functions exceptionally easy and doesn't clutter the screen with excess options. From finding a PDF file in a cloud storage tool like Dropbox or Google Drive to signing it and sending it to someone via the Mail app, the interface here is fantastic. In terms of tools, you can do quite a bit. When you import a document, it loads with every page separate so you can open a single page, add text, or sign in red or black ink, or send the document to someone. If you have other INK apps installed like doctape, you can send to that, or you can save to Evernote or send via e-mail.
Everything in ThatPDF is designed to streamline the sometimes cumbersome process of signing, converting, and sending PDF files from your iPad. If you don't already have a scanning app or other PDF manager, download ThatPDF free from the App Store today.