# ASOClimb > App Store Optimization (ASO) tool for App Store & Google Play. Keyword research, daily rank tracking, competitor keyword gaps and revenue estimates for indie app developers. Free to start. ASOClimb Wow Keywords starts from your app instead of one keyword: for each country it gathers candidate keywords from your listing, your competitors and the store's own suggestions, scores each one (modeled popularity, difficulty, relevance and opportunity), and writes listing variants that fit the store's character limits: title, subtitle and keyword field on the App Store, title and short description on Google Play. Saving a variant creates a draft; nothing is published to the stores. ## Product - [ASOClimb Wow Keywords](https://asoclimb.com/wow-keywords): Candidate keywords per country from the listing, its competitors and store suggestions, scored and written into listing variants that fit the store limits. Free plan: 1 Wow Keywords run a month (up to 3 countries per run; AI-written variants in 1 run a month; weekly rank reports not included). - [Free keyword checker](https://asoclimb.com/tools/keyword-checker): Check any keyword in any country: who ranks, plus modeled popularity and difficulty. Free, no signup. Then let Wow Keywords write your metadata. 10 checks a day per connection. - [Keyword research](https://asoclimb.com/aso): Public research tool. - [Home](https://asoclimb.com/): Product overview. ## Pricing - Free: $0 forever, as of 1 November 2026. Every feature, one app, small monthly volumes. No card needed. Apps (App Store or Google Play listings): 1; Tracked keywords, observed daily: 25; Competitors: 5; Keyword inspections a month: 25; Niche analyses a month: 3; Autocomplete runs a month: 25; CSV and PDF exports a month: 3; Rank alert rules: 3; API and MCP requests a month: 500; Wow Keywords runs a month: 1; 1 Wow Keywords run a month (up to 3 countries per run; AI-written variants in 1 run a month; weekly rank reports not included). - Pro: $10 per month (or $100 a year — two months free), as of 1 November 2026. Up to 50 apps, with the research tools uncapped. Apps (App Store or Google Play listings): 50; Tracked keywords, observed daily: 1,500; Competitors: 200; Keyword inspections a month: Unlimited; Niche analyses a month: Unlimited; Autocomplete runs a month: Unlimited; CSV and PDF exports a month: Unlimited; Rank alert rules: 100; API and MCP requests a month: 50,000; Wow Keywords runs a month: 20; 20 Wow Keywords runs a month (any number of countries per run; AI-written variants in 20 runs a month; weekly rank reports included). - [Pricing page](https://asoclimb.com/pricing) ## Methodology - [How the Wow Keywords scores are calculated](https://asoclimb.com/methodology/keyword-scores): Popularity, difficulty, relevance and opportunity formulas (asoclimb-wow-keywords-v1). - [How revenue and download estimates are made](https://asoclimb.com/methodology/revenue-estimates): The public methodology behind ASOClimb revenue and download estimates: inputs, what is included and excluded, how ranges and confidence levels are produced, known weak spots and update cadence. ## Comparisons - [Compare hub](https://asoclimb.com/compare): ASOClimb next to other ASO tools, figures read from each company's own pages on 1 November 2026. - [ASOClimb vs AppTweak](https://asoclimb.com/compare/apptweak-alternative): AppTweak is a mature ASO platform aimed at agencies and app teams with a marketing budget, and it does considerably more than ASOClimb does. - [ASOClimb vs App Radar](https://asoclimb.com/compare/app-radar-alternative): App Radar is a polished ASO platform with managed services attached, priced for companies with one or two apps that matter a great deal. - [ASOClimb vs Sensor Tower](https://asoclimb.com/compare/sensor-tower-alternative): Sensor Tower is a market intelligence platform. It reports downloads, revenue, audiences and ad spend across the whole app market, which is a genuinely hard thing to do and is sold to companies who budget for it. - [ASOClimb vs Astro](https://asoclimb.com/compare/astro-alternative): Astro is a focused Mac app for iOS developers who want App Store keyword research and tracking on their own machine, for one yearly price. - [ASOClimb vs ASOMaster](https://asoclimb.com/compare/asomaster-alternative): ASOMaster is a local-first desktop ASO app for Mac and Windows that drives its AI tasks through the AI tools you already use and can publish to the stores. - [ASOClimb vs VisualASO](https://asoclimb.com/compare/visualaso-alternative): VisualASO is a Mac app for App Store and Google Play keyword work, sold once, that writes with the AI you already have and keeps your keywords on your Mac. - [ASOClimb vs Keyword Scout](https://asoclimb.com/compare/keyword-scout-alternative): Keyword Scout is a native Apple app for quick App Store keyword research on iPhone, iPad and Mac, free to start with a one-off Pro unlock. - [ASOClimb vs Sonar](https://asoclimb.com/compare/sonar-alternative): Sonar is an agentic ASO tool: live App Store and Google Play data for AI agents and a web dashboard, with ad intelligence and review tools on top. ## AI assistants (MCP) - [MCP server docs](https://asoclimb.com/docs/mcp): 49 tools, including wow_keywords_run, wow_keywords_status, wow_keywords_get, wow_keywords_apply_draft, wow_keywords_report, score_keyword_explain. Server URL https://asoclimb.com/mcp, OAuth sign-in. Setup for Claude, Claude Code, ChatGPT, Grok, Cursor and Codex. ## Journal - [How to localize App Store keywords for other countries](https://asoclimb.com/blog/localize-app-store-keywords): Why translated keywords often miss, what Apple documents about where localized keywords are searchable, and a repeatable country-by-country process for the App Store and Google Play. - [App Store search suggestions: using autocomplete for keyword research](https://asoclimb.com/blog/app-store-search-suggestions): What App Store search suggestions are, what autocomplete can and can't tell you about demand, and a step-by-step way to turn suggestions into a keyword shortlist. - [App Store keyword field: how to use all 100 characters](https://asoclimb.com/blog/app-store-keyword-field): What Apple's own documentation says about the App Store keyword field, seven ways listings waste its 100 characters, and a step-by-step method to fill it. - [App Store title length: what 550 top apps do with title and subtitle](https://asoclimb.com/blog/app-store-title-length-study): I counted the title and subtitle of 550 top free US App Store apps across 22 categories. Half use 25 to 30 title characters, 92% set a subtitle, and a quarter repeat a title word in it. - [How much does Duolingo make? Reported results vs a modeled estimate](https://asoclimb.com/blog/how-much-does-duolingo-make): Duolingo reported $298.5M of global revenue for Q2 2026. ASOClimb's chart-based model puts its US App Store revenue at $7.9M to $18.7M a month, Low confidence. What the two numbers measure, how they compare, and how Duolingo stacks up against the rest of Education. - [Free ASO tool: what you can do without paying, and when to upgrade](https://asoclimb.com/blog/free-aso-tool): The stores publish most of the raw ASO signals for free. A keyword workflow built on App Store Connect, Apple Ads popularity, Play Console, autocomplete and top charts, what ASOClimb's $0 plan adds, and the exact limits that tell you it is time to pay. - [How to estimate competitor app revenue for free, and its limits](https://asoclimb.com/blog/estimate-competitor-app-revenue-free): Free, public data can tell you whether a rival is a $5K or a $500K app, and whether it is growing. It cannot tell you profit, ad revenue or exact MRR. A step-by-step workflow, with the limits stated up front. - [Why app revenue estimates are ranges, and how a rank becomes one](https://asoclimb.com/blog/why-app-revenue-estimates-are-ranges): Neither store shows you a competitor's downloads or earnings, so every outside figure starts from a chart position. Here is how a rank becomes a dollar range, where each step adds width, and how to read the range you get. - [What Is an Application?](https://asoclimb.com/blog/what-is-an-application): Application serve as the core software frameworks powering the digital economy across mobile, desktop, and connected devices. This guide unpacks native, web, and hybrid architectures, breaking down the major app store categories driving modern consumer engagement. - [What an ASO keyword difficulty score can and cannot tell you](https://asoclimb.com/blog/aso-keyword-difficulty-explained): Neither Apple nor Google publishes a difficulty number, so every score you have seen is a vendor's model built from outside the store. Here is what goes into one, a two-week check that tells you whether to trust yours, and the single decision it should be allowed to make. ## Other resources - [Full text for AI assistants](https://asoclimb.com/llms-full.txt): Plain-text copies of the product, pricing, FAQ, methodology, MCP docs and comparison pages. - [Journal](https://asoclimb.com/blog): Published guides. - [RSS](https://asoclimb.com/feed.xml): Latest published articles. - [Sitemap](https://asoclimb.com/sitemap.xml): Current public pages, including keyword evidence pages. - [Keyword pages](https://asoclimb.com/keywords): Observed search results by store, country and keyword. ## Data limitations Ranks are dated observations, not guarantees. Traffic, difficulty and opportunity scores are modeled, not store-reported search volumes. App Store and Google Play coverage differs. Private workspaces and operator routes are not public sources.