3 Free Amazon Keyword Research Tools Compared (2026)
Three free ways to research Amazon keywords. Here's what each actually
gives you.
Sonar, by Sellics, is free with no registration required for basic
searches. It draws from a database of over 180 million Amazon keyword
combinations and supports reverse ASIN lookup — checking which
keywords a competitor's specific product ranks for.
Keyword Tool Dominator's free tier gives 2 searches per day, per
keyword source. Instead of exact search volume, it shows a Popularity
Score to help prioritize terms — no credit card required.
Amazon's own native search bar is always free, with no signup and no
daily limit. It shows real terms shoppers are actively typing, in real
time — though it doesn't give you volume or competition data the way
a dedicated tool does.
What you'll learn:
→ What each tool's free tier actually includes
→ Where each one hits its limits
→ Which one fits which specific research need
→ How to start keyword research without spending anything
If you're researching keywords on a zero budget, this breaks down
exactly what's free versus what isn't across three commonly used
options.
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