Free vs. Paid App Store Keyword Research Tools

What free tools actually give you

Free keyword research for the App Store exists in several forms: App Store search suggest (what Apple autocompletes when you start typing), basic keyword ranking checkers that manually query the store, and free tiers of paid tools that expose limited data with usage caps.

Search suggest is genuinely useful for ideation — it reveals what real users are typing, and it's available to anyone with an App Store account. The limitation is that it gives you the keyword ideas, not the numbers: you can't tell from search suggest whether a term gets 5 searches a day or 5,000.

Free tiers of paid tools typically give you popularity estimates for a handful of keywords per day, sometimes with a delay of days or weeks. These are useful for getting a general feel for a market but not sufficient for running a complete keyword research pass against a 100-term candidate list.

Where free tools fall short

The most significant gap in free keyword research is volume: you cannot affordably score 80-100 candidates in a sitting using tools that cap at 5 or 10 free lookups per day. A proper ideation-to-selection research pass requires scoring the full candidate list in one session — otherwise you're making selections based on incomplete data.

The second gap is freshness. The App Store's competitive landscape changes continuously — apps enter and exit, metadata is updated, and popularity scores shift with search behavior. Data that is 30 days old is materially misleading for difficulty scores in fast-moving categories.

The third gap is storefront coverage. Free tools typically expose data for one or two major storefronts. If your app is localized into German, French, or Japanese — or if you're investigating secondary markets as a strategy — single-storefront free tools don't support the research you need.

When a paid tool earns its cost

A paid keyword research tool earns its cost when the time it saves — or the installs it enables — exceeds the subscription fee. For an app generating above $500/month in revenue, a single well-chosen keyword that generates 5 additional organic installs per day, at a reasonable install value, pays for a year of tooling in a matter of weeks.

For a pre-revenue app or an early-stage app with very low monthly revenue, the economics are tighter. The honest answer is that the free approach — using search suggest for ideation, checking a handful of priority terms with a free tool, making considered metadata choices — is viable at the very early stage when the subscription cost is a significant fraction of monthly revenue.

The inflection point where a paid tool becomes clearly cost-effective is typically around $200-500/month in App Store revenue, assuming the research translates to meaningful ranking improvements. Below that, the expected value of better-researched keywords is real but the certainty is low enough that prioritizing product quality and user acquisition over ASO tooling is reasonable.

What ASOGrade does and doesn't do

ASOGrade is a paid keyword research tool at $14.99/month (or $99/year). It is specifically a research tool, not a suite — it does not include rank tracking, review management, Apple Search Ads campaign management, or reporting dashboards.

What it does: scores keyword popularity and difficulty in real time across all 109 storefronts, runs competitor teardowns (paste an App Store link, read the keyword set), and lets you analyze up to 100 keywords in a single batch. The popularity signal comes from Apple Search Ads demand data, not from estimated download counts.

What it deliberately does not do: the things that full ASO suites do and charge $79-$300/month for. If you need rank tracking dashboards, A/B test management, or review response workflows, ASOGrade is not the right tool. It is the research pass — the step before the metadata update — and stops there.

We're not going to tell you ASOGrade is the only valid choice. If you want a comprehensive suite that includes research as one of many features, products like AppTweak, Sensor Tower, or MobileAction do that. The tradeoff is that the all-in-one price reflects the full feature set, whether you use it or not. ASOGrade charges only for the research step.