Sydon Free Tools

Free tools for Amazon sellers

Use them right now. No signup, no email, no catch.

Listing Grade

Grade any ASIN A–F on backend keywords, content, images, and Rufus-readiness, using only its public listing data.

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FBA vs FBM Calculator

See your real, all-in fulfillment cost on both models side by side, not just Amazon's headline fee numbers.

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PPC Waste Calculator

Paste in your Search Term Report and find exactly which keywords are burning ad spend with zero sales.

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Keyword Rank Checker

Check where any ASIN actually ranks for any keyword on Amazon, on demand, for free.

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Free forever

Account Guardian is free forever. Atlas is the full platform behind it.

Account Guardian watches your account 24/7 at no cost, no card needed. Atlas adds the other agents, pricing, listings, PPC, inventory, starting at $39/mo, up to $129/mo for the full platform.

Start free with Account Guardian