Journal is an application developed by Apple to help users write journal entries and easily insert images, videos and other content. Your entries are stored locally on your iPhone and you can have iCloud backups. Apple's Journal app allows you to easily jot down your thoughts when you're on the phone and allows you to write messages and other reminders about what you've done in a day. On the Journal home page, you'll see recent journal entries and a plus sign (+) at the bottom of the screen.
The next time you open the Journal app, you'll be asked if you want to unlock your journal with Touch ID or Face ID. The Journal app, which is automatically available on the iPhone with iOS 17.2 and later, offers suggestions for keeping a diary based on your photos, videos, music, podcasts and locations.
