App Store Optimization data API
Knockplum
Live App Store and Google Play intelligence for ASO managers, growth analysts, and mobile marketers.
Rankings, keyword search, search volume, metadata, and featuring — delivered through a pay-per-credit API your team can automate.
Full refund if you are not happy. 30 free credits at signup.
Why ASO data matters
Store search still drives most organic app discovery
About two-thirds of App Store downloads and well over half on Google Play begin with a search. For ASO specialists and growth teams, ranking visibility and keyword demand are core acquisition inputs — not side metrics.
~65%
of iOS downloads start from store search
If an app is invisible for the phrases users type, paid UA has to carry the full load.
Top 3
captures most search taps
Moving from page two into the top results is where organic install lift usually shows up.
ASO compounds
listing wins keep earning
A stronger title or creative keeps producing impressions after the work is done.
Deeper context: Why App Store Optimization still decides who gets found.
The product
App Store Optimization data your analysts can act on
Knockplum is a live ASO data platform delivered as an API. Use it for keyword research, rank monitoring, listing audits, featuring checks, and automated reporting across iOS and Google Play. Technical request samples live in the API documentation.
Category rankings
See where an app sits on App Store and Google Play charts by category and country — the first number most ASO reviews open with.
Keyword search results
Pull the live store SERP for any term so you can map who owns page one and where a title can still break in.
Search volume & popularity
Measure demand before you rewrite metadata. Prioritize keywords people actually search, not vanity phrases.
App metadata
Titles, subtitles, descriptions, ratings, versions, and listing assets — useful for audits, competitor sheets, and change logs.
Featuring & editorial
Track App Store featuring and editorial placements as part of normal coverage, not a separate enterprise ask.
Autocomplete suggestions
Capture the phrases users type as they search. A fast way to expand keyword lists with real store language.
REST + MCP access
One API key for scripts, internal tools, and AI agents. Same credit balance whether a human or Claude makes the call.
Exact and modeled labels
Store facts and estimates are labeled in every response, so analysts know which fields are safe for reporting.
Why Knockplum
A cleaner way to run ASO data work
Built for ASO workflows
Rank checks, keyword research, listing audits, and featuring watches — delivered as data you can drop into sheets, BI, or an agent.
Pay per credit
Buy credits when you need them. Lookups cost less; search-style calls cost more because they do more work. No seat licenses.
iOS and Google Play together
One key and one balance for both stores, so cross-platform keyword work stays in a single integration.
Live data at launch
Today’s rankings, search results, metadata, and featuring — ready for weekly ASO loops and client reporting.
Built for ASO and mobile growth teams
If your week already includes keyword lists, rank snapshots, and store audits, Knockplum is the data layer underneath that work.
ASO managers & specialists
Run keyword research, rank tracking, and listing audits without waiting on a shared enterprise login.
Mobile growth analysts
Feed store rankings and search demand into the same models you already use for UA and organic forecasts.
App marketing agencies
Pull live SERPs and charts into client decks and recurring reports with a predictable credit cost.
Product & data engineers
Wire App Store and Google Play signals into internal tools, Slack digests, and automated ASO monitors.
Pricing
Simple credits. Clear costs.
$1 buys 100 credits. A metadata or chart lookup is 2 credits ($0.02). Search, volume, featuring, and suggestions are 10 credits ($0.10). Credits stay on your balance until you use them.
- Lookups
- 2 credits
- Search-type calls
- 10 credits
- Free on signup
- 30 credits
Full credit table, auth, and error codes → documentation.
Pre-order founding pack
Pay now, get 2,000 credits when the API opens — about 1,000 lookups or 200 search calls. Founding rate locked for early buyers.
- REST + MCP on the same key
- Direct line to the founder for data issues
- Full refund if we miss the ship date
- Early-supporter founding rate
Checkout via Stripe when the payment link is live.
ASO resources
Guides for App Store Optimization teams
6 min read
Why App Store Optimization still decides who gets found
Most installs still start with a store search. Here is what that means for indie apps and small teams in 2026.
Read →7 min read
Keyword research that actually moves installs
Volume, difficulty, and relevance — how to pick terms worth ranking for on iOS and Google Play.
Read →5 min read
Live store data for scripts, agents, and weekly ASO loops
How teams turn rankings, search results, and featuring into a repeatable growth habit — without living in a dashboard.
Read →Not ready to buy?
Leave an email. One message when the API opens — no drip sequence.
FAQ
What am I pre-ordering?+
The founding credit pack: 2,000 API credits for $19, delivered when Knockplum opens. Credits stay on your balance until you use them. If you are not happy, we refund in full.
How do credits work?+
$1 = 100 credits. Metadata and category-ranking lookups cost 2 credits. Search results, search volume, featuring, and autocomplete cost 10 credits. Full tables live in the docs.
Is there a free way to try it?+
Yes — 30 credits on signup, no card required. Enough to wire a real integration and see the response shape before you buy.
What data ships at launch?+
Live coverage for iOS and Google Play: category rankings, app metadata, search results, iOS search volume, iOS featuring, and autocomplete suggestions. Historical storage comes later once live usage is solid.
Who is Knockplum for?+
ASO managers, growth analysts, mobile marketers, agencies, and engineers who need App Store Optimization data in scripts, reports, or AI agents — not another heavyweight dashboard.
Can I use it from Claude or Cursor?+
Yes. The MCP server uses the same key and credit balance as the REST API. Setup notes are in the docs.