素签 is a free iPhone app developed by 素琼 曹. It falls under the category of Utilities & Tools. This app aims to provide a simple and minimalist platform for users to write and keep track of their notes and diaries.

The main features of 素签 include iCloud synchronization, allowing users to access their notes on all their devices. It also offers privacy protection through Touch ID and password options. Users can use the app offline, without the need for an internet connection. The app presents notes in a timeline format, making it easy to navigate and organize entries.

Other notable features of 素签 include a variety of letterhead designs, the ability to change fonts for a personalized writing experience, a night mode to protect the user's eyes, and multiple display styles to choose from. The app also offers reminders to encourage daily writing and a full-text search function for easy retrieval of specific notes.

Users can export their notes as PDF or Txt files via email. For any suggestions or inquiries, users can contact the developer at