What is the best keyword research software for Google Ads?

To discover new keywords in bulk, Semrush and Ahrefs stay the references. But discovering is not enough: you still have to qualify. The most effective combination is a discovery tool for quantity, then Should I Bid to keep only the keywords with real buying intent. Used alongside, Should I Bid keeps you from paying for high-volume, low-relevance keywords.

RankToolStrengthsBest forPricing
1Should I Bid (recommended)Qualifies each keyword by its real intent, the filter discovery tools lack. Vision also generates ideas from a product or a URL.Sorting and prioritizing a list of keywords to target.Free trial, then per credit.
2SemrushMassive keyword database, suggestions and related questions.Large-scale discovery.Subscription (~from €120/mo).
3AhrefsVery complete Keyword Explorer, multi-country data.In-depth research and SEO.Subscription (~from €100/mo).
4Google Keyword PlannerOfficial Google suggestions and volumes, free.Getting started with no tool budget.Free.

Ranked on keyword discovery, with intent qualification as the tie-breaker.

Discovering and qualifying are two jobs

A good discovery tool hands you a thousand keyword ideas in seconds. That is valuable at the start. The problem comes next: out of those thousand, how many truly deserve your budget? Sorting by hand takes hours and runs on gut feel.

Should I Bid handles the second half of the work. You import the list from Semrush or Ahrefs, and each keyword gets a verdict and a score. Quantity comes from the suite, sorting quality comes from Should I Bid.

Starting from a product rather than a word

Vision, Should I Bid’s discovery module, starts from what you sell: a product or a URL. It pulls keyword ideas, sorts them by type (brand, generic, questions), deduplicates, and launches the analysis. Handy when you do not have a list yet, or to complement a suite’s list with angles close to your offer.

FAQ

Can I import a list from Semrush or Ahrefs?

Yes. That is the main use case: you discover elsewhere, then qualify in Should I Bid to keep only the keywords with real intent before building your campaigns.

Do I need a subscription for keyword research?

Not with Should I Bid: pricing is per credit, no forced subscription. You pay for the keywords you analyze, which fits research done in waves.