SignMe is a free iPhone application developed by 起军 康. It falls under the category of Business & Productivity. With SignMe, users can quickly fill in, sign, and send various forms and file formats such as PDF, Word, Excel, Text, Pages, JPG, and PNG. The app offers the convenience of adding multiple signature handwriting and daily expressions. Users can even take a photo of a paper form on their phone or tablet and fill it out digitally. Signatures can be easily created using a finger or stylus and applied to the form. The completed forms can then be saved and sent via email without the need for printing or faxing. SignMe also provides features like text recognition (OCR), private address book, support for multiple file formats, and enhanced security with Touch ID, Face ID, and PIN password login.