How do I actually read competitor reviews to find real product gaps, not just random complaints?
The short answer
Pull reviews from 5-12 competitor ASINs or listings and look for the complaint that repeats across multiple unrelated products, not a one-off rant - a single bad review about packaging is noise, but the same packaging complaint on three competitors' top sellers is a genuine gap you can fix and market against. Read the 3-star reviews before the 1-star ones - unhappy-but-still-bought customers are usually more specific and less emotional about exactly what's missing than the angriest reviewers. Do this before you finalise your own product spec, not after launch - it's far cheaper to fix a packaging or sizing issue on paper than to redo a manufacturing run.
A quick summary to orient you. The real value is below: the resources worth your time, from people who've actually done it, not us.
Here are the resources
Hand-picked from around the web, each with a note on why it earns your time. India-specific ones carry a badge.
Why we picked it
Written by an Amazon-seller tool company, so the review-mining advice is grounded in what actually surfaces usable product gaps versus what's just noise from a handful of outlier complaints.
Why we picked it
A free, official Amazon tool that surfaces real demand and gap data pulled directly from Amazon's own search and purchase behaviour - a more reliable data source than third-party estimation tools for anyone already selling or planning to sell on Amazon.