• PDF Expert 7
• Calendars 5
• Documents
• PDF Converter
• PDF Expert 6
• PDF Expert for Mac
• Printer Pro
• Scanner Mini
• Scanner Pro
• Readdle Early Access

1. Troubleshooting

• 1.1. PDF Expert quits or doesn't open
• 1.2. PDF Expert app freezes
• 1.3. Sync issues
• 1.4. File cannot be opened
• 1.5. Annotations made in PDF Expert are not visible in a third-party app
• 1.6. Restore accidentally deleted files