---
title: Map Which Sources Actually Back Which Claim — Free
description: List the claims in your draft and mark which of your sources support each one, so the unsupported claim shows up before a marker finds it.
category: learning
last_verified: 2026-09-13
freshness: green
published: 2026-09-13
canonical_url: https://gratis-ai.pages.dev/articles/citation-source-matrix.html
companion_app_url: https://gratis-ai.pages.dev/apps/citation-source-matrix.html
reading_time_minutes: 4
tags: learning, writing, citations, sources, local-first, no-account
---

# Map Which Sources Actually Back Which Claim — Free

List the claims in your draft and mark which of your sources support each one, so the unsupported claim shows up before a marker finds it.

**Free and complete.** This guide is a standalone free tool — no account, no card, anywhere. The only paid option is one optional extra outcome: $4 one-time. Nothing in the free tier is gated.

## Who it's for

Anyone seeking practical 100% free AI workflows — no paid API keys, credit cards, or subscriptions

## What's free

- Unlimited claims and unlimited source keys
- Unsupported rows pulled into a wash band
- Starter, literature-review and fieldwork records included

## Optional paid add-on

**$4 one-time.**

- Printable coverage matrix — mark rows off as you source them on paper — estimate: ~15 minutes saved per redraft
- Saved matrices per draft — keep three drafts in this browser — estimate: ~20 minutes saved across a term
- Source key log on the paid copy — the key with the notes you took on each source — estimate: ~30 minutes saved at the reference stage

## Sources & verification

- Tool: GratisAI local-first coverage matrix (no key, no account)
- Primary source: the free tool itself (local-first, no external dependency)
- Last verification: 2026-09-13 (green)

## Use it

- Interactive guide: https://gratis-ai.pages.dev/articles/citation-source-matrix.html
- Companion app: https://gratis-ai.pages.dev/apps/citation-source-matrix.html
- This machine-readable mirror: /mirrors/citation-source-matrix.md

*Generated free at https://gratis-ai.pages.dev/articles/citation-source-matrix.html — every guide on GratisAI is a complete, working tool. $0, no account, no card, anywhere.*