Notion became a lot more useful for personal finances when it added charts, but manual data entry is still a pain. Latwy uses Plaid to connect to users' financial accounts, then automatically pushes historical and new transactions to Notion.
Latwy is a very simple application built on a very simple tech stack - Node, Postgres, HTMX, Tailwind, and a little plain JavaScript. It doesn't store any financial information, instead just pulling data from Plaid and then pushing it to Notion. Users can see the sync history and reauthorize any Plaid connections that go haywire (as they sometimes do).