Expert app store optimization covering keyword research, screenshot design, A/B testing listings, review management, localization strategy, app preview videos, rating prompts, category selection, competitive analysis, and ASO tools.
Use when the user asks about app store optimizer, app store optimizer best practices, or needs guidance on app store optimizer implementation.
Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.
Expert app store optimization covering keyword research, screenshot design, A/B testing listings, review management, localization strategy, app preview videos, rating prompts, category selection, competitive analysis, and ASO tools.
Use when the user asks about app store optimizer, app store optimizer best practices, or needs guidance on app store optimizer implementation.
Do NOT use when the user needs a different specialized skill or is asking about an unrelated technology domain.
This skill provides comprehensive expertise in App Store Optimization (ASO) for both Apple App Store and Google Play Store. It covers the full lifecycle of optimizing app discoverability and conversion rates, from keyword research and metadata optimization through visual asset creation, review management, and continuous iteration based on analytics.
ASO Fundamentals
Ranking Factor Weights
Factor
App Store (iOS)
Google Play
App name / title
Very High
Very High
Subtitle
High
N/A
Keyword field
Very High
N/A
Short description
N/A
High
Long description
Low (not indexed)
High (indexed)
Downloads velocity
High
High
Ratings and reviews
High
High
Update frequency
Medium
Medium
Retention / engagement
Medium
High
Crash rate
Medium
High
Backlinks
N/A
Medium
Metadata Character Limits
Field
App Store
Google Play
App name / title
30 chars
30 chars
Subtitle
30 chars
N/A
Short description
N/A
80 chars
Keyword field
100 chars
N/A
Description
4000 chars
4000 chars
What's New
4000 chars
500 chars
Promotional text
170 chars
N/A
Keyword Research Methodology
Step-by-Step Process
Keyword Research Workflow:
1. Brainstorm seed keywords
├── Core functionality terms
├── Problem/solution terms
├── Competitor brand terms (careful - avoid trademarked terms)
└── User language terms (how users describe the problem)
2. Expand keyword list
├── App Store Suggest (type in search bar, note autocomplete)
├── Google Play autocomplete
├── ASO tools (App Radar, Sensor Tower, AppTweak)
├── Related searches shown after search results
└── Competitor keyword spy tools
3. Evaluate keywords
├── Search volume (traffic score)
├── Difficulty (competition score)
├── Relevance (does it match your app?)
└── Intent (will searchers want your app?)
4. Prioritize keywords
├── High volume + low difficulty + high relevance = PRIORITY
├── High volume + high difficulty = LONG TERM
├── Low volume + low difficulty = QUICK WIN
└── Low volume + high difficulty = AVOID
5. Place keywords strategically
├── Most important → App name
├── Second tier → Subtitle (iOS) / Short description (Android)
├── Supporting → Keyword field (iOS) / Description (Android)
└── Do NOT repeat keywords across fields (iOS deduplicates)
Keyword Placement Strategy (iOS)
iOS Keyword Optimization Rules:
- Keywords are pulled from: Name + Subtitle + Keyword field
- Do NOT repeat words across these three fields
- Keyword field: Use commas as separators, no spaces after commas
- Apple indexes singular and plural forms separately
- Include common misspellings if space allows
- Localize keywords for each target market
Example:
Name: "FitTrack - Workout Planner"
Subtitle: "Exercise & Gym Log"
Keywords: "fitness,training,health,routine,muscle,cardio,strength,weight,body,yoga"
Effective indexed terms:
fittrack, workout, planner, exercise, gym, log, fitness, training,
health, routine, muscle, cardio, strength, weight, body, yoga
+ combinations like "fitness planner", "gym workout", etc.
Keyword Placement Strategy (Google Play)
Google Play Keyword Optimization Rules:
- Google indexes the full description (all 4000 chars)
- Repeat primary keywords 3-5 times naturally in description
- Short description is heavily weighted - use top keywords
- Title has highest weight per character
- Google understands synonyms and related terms
- Backlinks with anchor text influence ranking
- Do NOT keyword-stuff; Google penalizes this
Example Short Description (80 chars):
"Track workouts, build muscle & reach fitness goals with personalized plans"
Screenshot Design
Best Practices
Guideline
Details
First 2 screenshots
Most critical; visible without scrolling in search results
Orientation
Portrait for phones; landscape acceptable for tablets/games
Large enough to read on search results (not just detail page)
Device frames
Optional; Apple no longer requires them
Consistency
Uniform style, color scheme, and typography across all screenshots
Count
Use all available slots (10 on iOS, 8 on Google Play)
Localization
Translate text overlays for each market
Screenshot Sequence Strategy
Recommended Screenshot Order:
1. Hero shot - Primary value proposition + most impressive UI
2. Key feature 1 - The feature that solves the main user problem
3. Key feature 2 - Differentiating feature vs. competitors
4. Social proof - "Trusted by 1M+ users" or press quotes
5. Key feature 3 - Another compelling feature
6. Integration/ecosystem - Works with other tools/platforms
7. Personalization - Show customization options
8. Call to action - "Get started free" or pricing info
A/B Testing Screenshots
Screenshot A/B Test Framework:
├── Test one variable at a time
│ ├── Background color
│ ├── Text copy
│ ├── Screenshot order
│ ├── With/without device frames
│ └── Dark vs. light UI shown
├── Run for 7+ days minimum
├── Need 1000+ impressions per variant for significance
├── Use Google Play Store Listing Experiments (built-in)
├── Use third-party tools for iOS (SplitMetrics, StoreMaven)
└── Track conversion rate (impressions → installs)
Review Management
Review Response Strategy
Review Response Decision Tree:
├── 5-star review
│ └── Thank the user briefly, mention a new feature they might like
├── 4-star review
│ ├── Thank them, ask what would make it 5 stars
│ └── If they mention a specific feature, note it for product roadmap
├── 3-star review
│ ├── Acknowledge their feedback
│ ├── Address specific concerns
│ └── Invite them to contact support for resolution
├── 2-star review
│ ├── Apologize for the experience
│ ├── Address the specific issue
│ ├── Provide a workaround if available
│ └── Ask them to update review after fix
├── 1-star review
│ ├── Respond within 24 hours
│ ├── Never be defensive
│ ├── Provide direct support contact
│ ├── If it is a bug, confirm you are fixing it
│ └── If it is a misunderstanding, clarify politely
└── Spam / inappropriate review
└── Report to Apple/Google for removal
Review Response Templates
Bug Report (1-2 stars):
"Hi [Name], we're sorry you experienced this issue. We've identified the
bug you described and our team is working on a fix for the next update.
In the meantime, you can [workaround]. If you need immediate help,
please reach out to support@myapp.com. Thank you for your patience."
Feature Request (3 stars):
"Thank you for the feedback! We hear you on [feature request]. It's on
our roadmap and we're aiming to include it in an upcoming release.
We'd love to hear more about your use case at feedback@myapp.com."
Positive Review (5 stars):
"Thank you so much for the kind words! We're thrilled you're enjoying
[specific feature mentioned]. Have you tried [related feature]? We think
you'll love it too!"
Rating Prompt Strategy
When to Ask for Ratings
Rating Prompt Triggers (Best Practices):
├── After a positive experience
│ ├── Completing a key task successfully
│ ├── Reaching a milestone or achievement
│ ├── After the Nth successful session (e.g., 5th)
│ └── After a positive outcome (workout completed, goal reached)
├── Timing constraints
│ ├── NOT on first launch
│ ├── NOT after a crash or error
│ ├── NOT during a flow (checkout, editing)
│ ├── Maximum 3 prompts per 365-day period (Apple limit)
│ └── Wait at least 14 days between prompts
├── Smart gating approach
│ ├── First: Ask "Are you enjoying [App]?" in custom dialog
│ ├── If YES → Show native rating prompt (SKStoreReviewController)
│ ├── If NO → Show feedback form (capture issues internally)
│ └── This prevents negative reviews from reaching the store
└── Never incentivize reviews (violates store guidelines)
Localization Priority Framework:
1. Analyze current organic traffic by country (App Store Connect / Play Console)
2. Estimate market size (smartphone users * app category penetration)
3. Assess competition level in each market
4. Consider monetization potential (ARPU by country)
5. Evaluate localization cost vs. expected return
Tier 1 (highest ROI): English, Spanish, Portuguese, French, German, Japanese
Tier 2: Korean, Italian, Dutch, Russian, Turkish, Arabic
Tier 3: Thai, Vietnamese, Indonesian, Hindi, Polish, Swedish
Minimum viable localization:
- Translate: Name, subtitle/short description, keywords, screenshot text
- Do NOT auto-translate descriptions (use native speakers)
- Localize screenshots (text overlays + possibly UI screenshots)
- Research local keywords (direct translation often misses search terms)
App Preview Videos
Video Best Practices
Aspect
Recommendation
Length
15-30 seconds (attention drops sharply after 15s)
First 3 seconds
Hook with the most impressive feature
Narration
Optional; use captions for accessibility
Music
Upbeat, non-distracting background music
Content
Show real app usage, not promotional motion graphics
Resolution
Record at device native resolution
Orientation
Match primary app orientation
Call to action
End with download prompt or key value proposition
Autoplay
Videos autoplay on mute in App Store - visual clarity is critical
Category Selection
Category Strategy
Category Selection Decision:
├── Primary category
│ ├── Choose the most accurate category for your app
│ ├── Consider competition density (fewer apps = easier ranking)
│ ├── Check top 10 in each candidate category
│ └── Verify your app legitimately fits the category
├── Secondary category (iOS only)
│ ├── Choose a complementary category for additional exposure
│ ├── Can rank in both categories simultaneously
│ └── Example: Meditation app → Primary: Health & Fitness, Secondary: Lifestyle
└── Category changes
├── Allowed (both platforms)
├── Takes effect with next update
└── Rankings reset in old category
Competitive Analysis
Competitor Analysis Framework
For each top 5 competitor, analyze:
1. Metadata
├── Title / subtitle keywords
├── Description structure and keywords
├── Number and quality of screenshots
└── Whether they use app preview videos
2. Ratings & Reviews
├── Average rating and total count
├── Recent review sentiment trends
├── Common complaints (opportunities for you)
└── Features users praise most
3. Update Frequency
├── How often they update
├── What they highlight in release notes
└── Feature velocity
4. Keyword Rankings
├── Which keywords they rank for
├── Keywords where they are weak (your opportunity)
└── Keyword overlap percentage with your app
5. Visual Assets
├── Screenshot style and messaging
├── Icon design approach
└── What they emphasize first
ASO Tools Comparison
Tool
Strengths
Best For
Sensor Tower
Market intelligence, ad intelligence
Enterprise, competitor research
App Radar
Keyword tracking, ASO workflow
SMB, hands-on optimization
AppTweak
Keyword research, market analysis
Data-driven keyword strategy
AppFollow
Review management, competitor monitoring
Review ops, sentiment analysis
SplitMetrics
A/B testing store pages
Conversion rate optimization
Mobile Action
Keyword intelligence, visibility score
Keyword-focused ASO
data.ai (App Annie)
Market estimates, download data
Market sizing, trend analysis
Measurement and KPIs
Key Metrics to Track
Metric
Target
Source
Impressions
Growing month-over-month
App Store Connect / Play Console
Conversion rate (impression to install)
>30% (varies by category)
App Store Connect / Play Console
Keyword rankings
Top 10 for primary keywords
ASO tool
Average rating
>4.5
Store dashboard
Review response rate
100% for 1-3 star reviews
Store dashboard
Organic vs. paid split
>60% organic
Attribution tool
Day 1 retention
>40%
Analytics tool
Production Checklist
Research and select 15-25 target keywords
Optimize title with primary keyword
Write compelling subtitle (iOS) / short description (Android)
Fill keyword field with no duplicates (iOS)
Write keyword-rich description (Google Play)
Design 8-10 screenshots with benefit-driven headlines
Create app preview video (15-30 seconds)
Set up A/B test for top-of-funnel screenshots
Configure smart rating prompt after positive user events
Set up review monitoring and response workflow
Localize metadata for top 5 target markets
Select primary and secondary categories strategically
Complete competitor analysis for top 5 rivals
Set up weekly keyword ranking tracking
Establish monthly ASO review cadence
When to Use
Use this skill when:
Designing or implementing app store optimizer solutions
Reviewing or improving existing app store optimizer approaches
Making architectural or implementation decisions about app store optimizer
Learning app store optimizer patterns and best practices
Troubleshooting app store optimizer-related issues
Do NOT use this skill when:
The question is about a fundamentally different technology domain
A more specific sibling skill covers the exact topic needed
The user needs a complete hands-on tutorial rather than expert guidance
Output Format
# App Store Optimizer Analysis## Context Assessment
[Situation summary and constraints]
## Recommended Approach
[Primary recommendation with rationale]
## Implementation Steps1. [Step with specific details]
2. [Step with specific details]
3. [Step with specific details]
## Trade-offs and Considerations- [Key trade-off 1]
- [Key trade-off 2]
## Next Steps- [Immediate action item]
- [Follow-up action item]
Example
Input: "Help me implement app store optimizer for a medium-scale production application"
Output: A structured analysis covering current state assessment, recommended app store optimizer approach with specific patterns, implementation roadmap with milestones, and risk mitigation strategies tailored to the application scale and constraints.
Edge Cases
Legacy system integration: When app store optimizer must coexist with legacy approaches, provide a gradual migration path rather than a complete rewrite
Scale mismatch: When the solution complexity exceeds the project scale, recommend a simpler approach and note when to revisit
Team skill gaps: When the team lacks experience with the recommended approach, include learning resources and simpler alternatives
Conflicting requirements: When constraints conflict (e.g., performance vs. maintainability), explicitly state the trade-off and recommend based on stated priorities
