ASO & screenshot tools
Free tools for keyword research, metadata optimization, and screenshot creation. Use them standalone or track results daily in Stellar.
Keyword & ASO Tools
Research, optimize, and track keywords and metadata for the App Store.
Keyword Difficulty Checker
KeywordGet popularity, difficulty, and Top 10 barrier for any App Store keyword.
ASO Title & Subtitle Generator
KeywordGenerate optimized App Store title and subtitle from your app description and category.
App Metadata Optimizer
KeywordAudit title, subtitle, and keyword field for duplication, waste, and missing high-value terms.
App Store Keyword Suggestion Tool
KeywordEnter your app name and get suggested keywords, related phrases, and long-tail variations.
ASO Opportunity Score Calculator
KeywordSee if a keyword has HIGH, MEDIUM, or LOW opportunity based on rank, category, and competition.
Competitor Keyword Gap Finder
KeywordFind keywords your competitor ranks for that you don’t—instant opportunity list.
App Store Description Rewriter
KeywordTurn a boring description into an optimized version with features, benefits, and keyword balance.
ASO Checklist Generator
KeywordGet a step-by-step ASO checklist for your app niche—optionally as a downloadable PDF.
App Name Availability Checker
KeywordCheck availability for App Store name, domain, and social handles in one place.
App Category Competition Scanner
KeywordSelect a category and see average rating, downloads, and difficulty to rank for top apps.
Keyword Character Counter (Apple 100-char field)
KeywordCount characters for the 100-char keyword field with duplication detection and smart suggestions.
Review Keyword Extractor
KeywordPaste reviews and extract common phrases, sentiment keywords, and feature requests.
ASO Trend Detector
KeywordEnter your niche and see rising vs declining keywords—exploding topics for apps.
App Store Screenshot Text Analyzer
KeywordUpload screenshot text and get suggestions for stronger benefit wording and keyword additions.
ASO Title Character Preview Tool
KeywordSee how your title appears on iPhone, iPad, and in search—different devices, one view.
Screenshot & Visual Tools
Create, test, and optimize screenshots, icons, and visual assets.
App Store Screenshot Size Generator
ScreenshotGet required dimensions, safe zones, and status bar crop areas for any device.
Screenshot Text Overlay Generator
ScreenshotUpload a screenshot, add headline and subtext, choose layout, and export an optimized image.
Screenshot Preview Simulator
ScreenshotSee screenshots exactly as they appear on iPhone, iPad, search results, and product page.
App Icon Visibility Tester
ScreenshotUpload an icon and see it in App Store grid, dark mode, light mode, and small sizes.
Screenshot A/B Headline Tester
ScreenshotEnter two headlines and get a prediction of which is stronger by length, emotion, and benefit focus.
App Store Screenshot Text Character Counter
ScreenshotEnsure screenshot text is readable length and not too crowded—with character guidance.
Localization Screenshot Preview Tool
ScreenshotUpload a screenshot, select language, and see text expansion issues and overflow warnings.
App Store Feature Graphic Generator
ScreenshotCreate feature image and promo banner previews for Play Store and App Store.
Screenshot Scroll Flow Simulator
ScreenshotSee how screenshots look when users scroll fast—story flow and order optimization.
App Store Safe Area Checker
ScreenshotEnsure important content isn’t cut by device notches or UI overlays.
App Store Thumbnail Legibility Checker
ScreenshotShrink screenshot to search preview size and get a warning if text is unreadable.
Screenshot Contrast Analyzer
ScreenshotCheck readability and background-vs-text contrast for accessibility, UX, and ASO.
App Icon Shape Cropper
ScreenshotEnsure your icon fits iOS rounded corners and Android adaptive icon shapes.
Screenshot Sequence Optimizer
ScreenshotAI-suggested order: hook benefit, main feature, social proof, then advanced features.
App Store Screenshot Template Library
ScreenshotFree templates with headline zones and layout grids—huge SEO and conversion value.