Partial Doc Subscribe

Follow only the part of a shared doc or list you care about and get notified with highlighted diffs

Problem

Shared docs or lists are long, and every update forces a full reread to spot changes. When a partner updates a shopping list, a bank updates terms, or a team updates a shared list, users only want to know what changed in the part they care about, but must search manually.

Solution

Let users subscribe to any fragment of a shared doc or list. The system periodically fetches or syncs via API, detects changes, and only pushes a highlighted diff notification for that fragment, covering shopping lists, terms pages, shared spreadsheets and more.

Users

Teams collaborating on shared docs, family users, and consumers tracking terms updates

MVP

Paste a link or upload a doc; select any paragraph to subscribe; periodic fetch and diff; email or browser notification showing only that fragment's diff; simple subscription management page

Revenue

Free for 3 subscriptions plus a subscription tier for more subscriptions, team sharing, and history diffs

Why now

Shared docs and online terms keep growing, and under information overload people only care about local changes; an indie developer can validate quickly with lightweight scraping and diffing