Pubscout vs KDSPY: Chrome Extension Comparison for KDP Authors

Why authors choose Pubscout

• Free tier available — test before buying
• Niche hub on pubscout.app for research before you even open Amazon
• Monthly subscription means you're always on the latest version
• Opportunity scoring gives a composite signal, not just raw BSR

Where KDSPY may be stronger

• KDSPY has a longer track record as a Chrome extension — more user reviews and community tutorials
• One-time purchase model may appeal to researchers who don't want recurring costs

Is Pubscout better than KDSPY?

"Better" depends on your workflow. KDSPY shows estimated revenue per ASIN in a popup — fast for quick category sweeps. Pubscout overlays opportunity scores directly on search results and has a companion web app for pre-search niche research. Try both free tiers and see which feels more natural for how you actually research.

Does Pubscout show the same data as KDSPY?

The core data is similar — BSR, estimated sales, review count — but Pubscout adds an opportunity score that weights multiple signals rather than just revenue. Pubscout also has a keyword overlay on search pages and niche research hub pages that KDSPY doesn't offer.

Can I use Pubscout and KDSPY together?

Yes. Some authors use KDSPY for rapid category snapshots and Pubscout for deeper niche scoring and keyword overlay. Both can be installed simultaneously in Chrome.