# Official source notes

Checked on 8 November 2026. These notes support the fictional user's task in [brief.md](brief.md). Prices are the displayed USD amounts; changing facts should be rechecked before publication or purchase. No product accounts were tested.

| Source | Finding used |
| --- | --- |
| [Trello pricing](https://trello.com/pricing) | Free is USD 0 and permits ten boards per Workspace. Premium is USD 12.50 per user per month with monthly billing, or USD 10 per user per month billed annually. |
| [Trello export documentation](https://support.atlassian.com/trello/docs/exporting-data-from-trello/) | Board JSON export is available to board members. CSV export requires Premium. Its CSV export omits archived cards unless they are unarchived first. |
| [Notion pricing](https://www.notion.com/pricing) | Free is USD 0 per member per month and includes databases. The single-user workflow here does not assess team limits. |
| [Notion export documentation](https://www.notion.com/help/export-your-content) | Pages can export as Markdown; full-page databases export as CSV with page files. Form views cannot export directly; use the table view for form responses. |
| [Todoist pricing](https://www.todoist.com/pricing?lang=en) | Beginner is USD 0 and allows five personal projects, enough for the four in this brief. |
| [Todoist CSV import and export documentation](https://www.todoist.com/help/account-and-billing/security/import-or-export-a-project-as-a-csv-file-in-todoist-YC8YvN) | CSV project export is listed for Beginner, Pro and Business. Completed tasks are excluded, and recurring tasks do not retain their original starting date. |