Keep Todoist as is and just add Noti on top.
Your original is untouched. 4 steps, done in minutes.
Migration steps
1
Export from Todoist
Exporting per project via the CSV template gives you tasks, due dates, and priorities.
2
Projects = lists
Map Todoist projects to Noti lists and labels to tags.
3
Import into Noti
Due dates become to-do deadlines, and priorities come in as importance markers.
4
Recreate recurring tasks
Writing something like "매주 월요일" in natural language recreates it as a recurring to-do.
Sync. After migrating, you manage events, notes, and alarms together in one app.
Frequently asked questions
Do subtasks carry over?
Subtasks are flattened into checklist items or separate to-dos.
Can I reproduce Todoist filters?
You can build something similar using filters based on lists, tags, and dates.