Keep Google Keep as is and just add Noti on top.
Your original is untouched. 4 steps, done in minutes.
Migration steps
1
Export with Google Takeout
At takeout.google.com, select only Keep and export to get your notes as HTML/JSON.
2
Labels = lists and tags
Mapping Keep labels to Noti lists or tags keeps your categorization intact.
3
Import into Noti
Checklists become to-dos, and notes containing a date are recognized as event candidates.
4
Connect the same Google account
Connecting the same Google account you use for Keep turns on Calendar sync right away.
Sync. Since Keep reminders have been discontinued, moving your alarms and to-dos to Noti is more reliable.
Frequently asked questions
Do Keep image notes work?
Images can be moved over as attachments, and text recognition (OCR) on those images can even pull out event candidates.
Are color labels preserved?
Colors can be reproduced fairly closely by reassigning them as Noti list colors.