1. Prepare a backup for export
You will first need to tell Proloquo4Text which backup you want iTunes to be able to access.
- Go to Settings 
. - Go to Backups > Export Backups.
 - Find the file you want to export in the list of backup files. You may need to scroll down. When you find the file, tap it.
 - In the menu that pops up, select Export to iTunes.
 - Wait until you see a “Successfully Exported to iTunes” message, then tap OK.
 
2. Save your backup
You will now save the backup you exported from Proloquo4Text to your computer in iTunes.
- Connect your device to your computer using the device’s charging cable.
 - Click the device’s icon in the upper left corner of the iTunes window.
 - In the left sidebar, click File Sharing.
 - In the list of apps, select Proloquo4Text.
 - You will see a list of files. Backup files end in the extension .p4tbk. Select the file you want to save, then click Save to…
 - You can rename the file, but make sure to keep the .p4tbk extension. Choose where you want to save the file, then click Save.