Pro vs Free Version

Checkmark comes in two flavors: The free version is simpler and has AD. The pro version removed the AD and has more advanced features. Here is what Pro version has:

1. Without advertisement
2. Create multilevel checklist
3. Backup/restore data support
4. Import/export to CSV file
5. Share checklist as HTML format
6. Import from contacts directly for action items
7. and more...