There are three options for backing up your data if you're using Clue on iOS:
- Create an account with Clue. This feature can be found in Clue's menu. (This also allows you to access your data from multiple devices.)
- Back up using iTunes or iCloud. Instructions for this can be found on Apple's support pages
- Use the Backup feature to create a data export and email it to yourself or save it to any other destination made available by your device. This feature can be found in Clue's "More" section.