Free App Store Keyword Tool
Try: fitness · habit · budget · recipe. More categories are added as the index grows.
What is ASO?
App Store Optimization (ASO) is SEO for app stores. Most app installs start with a search — “budget app,” “habit tracker,” “photo editor.” The apps that rank for those searches get the installs. ASO is the work of choosing the right keywords and placing them where the store’s algorithm reads them.
How to pick app keywords
- Specific beats popular for a new app.You won’t outrank incumbents on “budget app” on day one. “Couples budget app” you can own.
- Match real searches, not your jargon.Users type problems, not features. “Split the bill,” not “expense allocation engine.”
- Weigh volume against difficulty. A low-difficulty keyword with modest volume that you actually rank for beats a high-volume one you never reach.
- Refresh quarterly.Rankings move. Re-check your terms and swap the ones that aren’t converting.
Title vs subtitle vs keyword field
| Field | Weight | Use it for |
|---|---|---|
| Title (30 chars) | Highest | Brand + your single most important keyword |
| Subtitle (30 chars) | High | Two or three more strong keywords |
| Keyword field (100 chars, iOS) | Medium | Comma-separated, no spaces, no repeats from title |
Don’t repeat a keyword across fields — the store reads them together. Spend every character.
Frequently Asked Questions
Is this ASO keyword tool free?
Yes. Search categories and get keyword ideas with volume and difficulty at no cost and no login — a genuinely free ASO keyword research tool.
How do I find low-competition app keywords?
Start broad, then add a qualifier that matches your niche — audience ("for couples"), use case ("for meal prep"), or platform. The more specific the phrase, the lower the difficulty, and the faster a new app ranks.
How many keywords should I target?
Focus on 1 hero keyword in your title, 2–3 in your subtitle, and fill the 100-character keyword field on iOS. Quality and relevance beat stuffing — the algorithm punishes irrelevance.
Where does the data come from?
Popular categories use a pre-computed index for instant, free results. Live volume and difficulty for any seed can be wired through a keyword-data provider with caching to keep it free for users.