Why Keyword Research Is the Foundation of ASO
Every successful ASO strategy starts with keyword research. It tells you what real users type into the App Store and Google Play when looking for apps like yours. Without it, you are guessing - and guessing in a market of 5 million apps is a losing strategy.
Keyword research answers three critical questions:
- What terms do users actually search for?
- How competitive are those terms?
- Which keywords can your app realistically rank for?
Types of App Store Keywords
Understanding keyword categories helps you build a balanced strategy:
By Intent
- Discovery keywords - Broad terms like "photo editor" or "fitness tracker"
- Comparison keywords - "best budget app" or "top free games"
- Brand keywords - Competitor names and your own brand
- Problem keywords - "how to track expenses" or "remove background"
By Volume and Competition
| Type | Search Volume | Competition | Example |
|---|---|---|---|
| Head terms | Very high | Extreme | "game" |
| Mid-tail | Medium | Moderate | "puzzle game free" |
| Long-tail | Low | Low | "daily word puzzle for adults" |
The sweet spot for most apps is mid-tail and long-tail keywords. They convert better because user intent is clearer.
Keyword Research Process
Step 1: Brainstorm Seed Keywords
Start with 20-30 terms that describe your app's core functionality, target audience, and use cases. Think about:
- What problem does your app solve?
- What would you search for if you did not know your app existed?
- What synonyms and variations exist for your core features?
Step 2: Expand with Tools
Use dedicated ASO tools to discover related terms and pull volume data:
- AppTweak - Comprehensive keyword intelligence with volume scores
- Sensor Tower - Competitive keyword analysis and tracking
- AppFollow - Keyword suggestions and rank monitoring
- data.ai - Market-level search data
- Apple Search Ads (free) - Popularity scores for iOS keywords
Step 3: Analyze the Competition
For each keyword candidate, examine:
- Which apps currently rank in the top 10?
- What are their download numbers and ratings?
- How established are they? A keyword dominated by apps with 1M+ reviews requires a different approach than one with newer competitors.
Step 4: Score and Prioritize
Create a simple scoring matrix for each keyword:
- Relevance (1-5): How closely does it match your app?
- Volume (1-5): How many people search for it?
- Difficulty (1-5): How hard is it to rank? (lower = easier = better)
- Total score = Relevance x 2 + Volume + (6 - Difficulty)
Prioritize keywords with high relevance first. A perfectly relevant keyword with moderate volume beats a high-volume keyword with weak relevance.
Step 5: Map Keywords to Metadata
Assign your top keywords to specific metadata fields:
- Title (highest weight) - 1-2 primary keywords
- Subtitle (iOS) / Short description (Android) - 2-3 secondary keywords
- Keyword field (iOS, 100 chars) - Remaining high-value terms
- Long description (Android) - Natural integration of all target keywords
Platform-Specific Tips
Apple App Store
- Use all 100 characters in the keyword field
- Separate terms with commas, no spaces
- Do not repeat words already in your title or subtitle
- Single words work better than phrases in the keyword field
- Apple auto-generates plurals and some common misspellings
Google Play
- Keywords in your description are indexed, so use them naturally
- Repeat important keywords 3-5 times across the full description
- The short description carries more weight than the long description
- Google considers user engagement signals alongside keyword relevance
Keyword Research Mistakes
- Targeting only high-volume terms - You will not rank for "camera" against Instagram
- Ignoring relevance - Ranking for irrelevant terms leads to uninstalls, which hurts rankings
- Not updating regularly - Search trends shift; revisit keywords monthly
- Copying competitors exactly - Their strategy may not work for your app's strengths
How Often Should You Update Keywords?
Review and refresh your keyword strategy every 2-4 weeks. Major updates should happen when:
- You launch a significant new feature
- Seasonal trends shift (holidays, back-to-school, etc.)
- A competitor changes their positioning
- Your rankings plateau or drop