Smart Planner is a versatile schedule book application offering calendar, ToDo, notepad, and diary functions. Launched in 2019, this app stands out for its simplicity and security features. Users can benefit from a variety of functions without the need for member registration, ensuring data privacy and safety. The app caters to individuals seeking a straightforward calendar notebook application. With features like customizable character sizes, sync options with iCloud and Google Calendar, and passcode lock compatibility with TouchID and FaceID, Smart Planner aims to provide a user-friendly experience.

Smart Planner's key functions include a detailed calendar with various viewing options, color-coded ToDo lists, customizable notepad settings, and a diary feature supporting multiple photos per entry. Additionally, users can personalize their experience with options like app icon and theme color changes, font selection, and language preferences. With data backup and synchronization capabilities, Smart Planner offers a seamless organizational solution for users.