Find the keywords you can
actually rank for
Volume, difficulty, and autocomplete data for every keyword on the App Store and Google Play — plus daily rank tracking and competitor intelligence.
LAUNCH DEAL · 50% OFF FOR LIFE
FitTrack Pro — iOS App Store
Keyword Rankings
| KEYWORD | DIFFDIFFICULTY | RANK | +/-CHANGE |
|---|---|---|---|
| fitness trackerfitness tracker | 84 | #3 | +2 |
| workout plannerworkout planner | 67 | #7 | -1 |
| step counterstep counter | 71 | #12 | +5 |
| calorie tracker appcalorie tracker app | 45 | #5 | 0 |
| running logrunning log | 32 | #2 | +3 |
From keyword idea to top-10 ranking
Research
Pull keyword data directly from Apple Search Ads and Google Play autocomplete. Real search popularity — not estimated guesses. Each keyword gets a difficulty score (0–100) based on competitive analysis of the top 10 ranking apps.
Focus on terms where you actually have a chance.
Track
Add your app and Sonar tracks your position for every keyword daily. See which metadata changes move the needle, catch ranking drops before they cost you downloads.
Keyword gap analysis surfaces terms competitors rank for but you don’t.
Outrank
Monitor competitors to find gaps in their keyword strategy. Compare your rankings against any competitor to surface high-opportunity terms you can exploit.
Unlimited apps, both stores, full history — $19/month annual.
Research, track, and outrank
Everything you need to find the right keywords, monitor your rankings, and stay ahead of the competition.
Keyword Research
Search volume, difficulty scores, and autocomplete suggestions across iOS and Google Play. Find untapped keywords your competitors miss.
Rank Tracking
Daily position monitoring for your apps and competitors. Catch drops early, see trends over time, and measure the impact of metadata changes.
Competitor Analysis
See what keywords competitors rank for. Find gaps in your strategy and discover high-opportunity terms they capitalize on but you don't target yet.
Revenue Estimates
NEWSee estimated monthly revenue for any app on the store. Combines installs, retention, IAP pricing, and chart signals — the kind of data Sensor Tower charges thousands for.
API & CLI
REST API and CLI included with every plan.
Dual platform
iOS App Store and Google Play in one dashboard.
Historical trends
Up to 12 months of rank history. Spot seasonal patterns.
$29/month — a fraction of the price
Unlimited apps, keywords, and full history. Enterprise features without enterprise bloat.
Both stores, one dashboard
iOS App Store and Google Play side by side. No switching tools or stacking subscriptions.
API + CLI on every plan
REST endpoints and a native CLI included. Automate workflows or plug into AI agents.
Simple, transparent pricing
One plan. Everything included. No surprises.
$54/yr billed annually · For AI agents & MCP tools
$99/yr billed annually · Launch price locked for life
14-day free trial · Cancel anytime
Frequently asked questions
[ ANSWER ]
Which app stores do you support?
Sonar supports both the iOS App Store and Google Play Store. You can track keywords, rankings, and competitors across both platforms from a single dashboard — no need for separate tools or subscriptions. Data sources include Apple Search Ads for iOS keyword popularity, the iTunes Search API for app metadata and search rankings, and Google Play autocomplete for Android keyword discovery. Both stores are treated as first-class citizens with full keyword research, difficulty scoring, and daily rank tracking.
Where does the keyword data come from?
Sonar combines multiple data sources to give you the most accurate picture possible. For iOS, we pull search popularity scores (5–100) from Apple Search Ads and supplement with autocomplete priority data from the App Store. For Google Play, we use autocomplete frequency data and cross-reference with Google Ads search volume as a proxy for keyword demand. You can optionally connect your own Apple Search Ads account (free to create) to unlock per-keyword popularity scores — the same data Apple uses internally. All difficulty scores are calculated using our proprietary algorithm that analyzes the top 10 ranking apps in real time.
How is the difficulty score calculated?
Our proprietary difficulty score (0–100) analyzes the top 10 ranking apps for each keyword across multiple competitive signals. We look at title match quality (exact, broad, partial, or none), the geometric mean of install counts and review volumes, average ratings, the number of top-100 apps using the keyword in their title or description, app age and update frequency, and whether the keyword is branded. A score of 0–30 means low competition (good opportunity), 30–60 is moderate, and 60–100 means highly competitive. The algorithm is based on open-source ASO research and extended with our own weighting model.
How often are rankings updated?
Rankings are tracked daily for all subscribers. Automated rank tracking jobs run between 2–5 AM UTC, searching each of your tracked keywords and recording your app's position in the results. Updated rankings are available in your dashboard by morning. You can also view historical rank trends over time to spot seasonal patterns, measure the impact of metadata changes, and catch ranking drops early. App metadata (ratings, reviews, install counts) is also synced daily to give you a complete picture of how your listing evolves.
Can I track competitor apps?
Yes — every subscription includes unlimited competitor tracking with no per-app fees. Add any competitor app from the App Store or Google Play and Sonar will monitor their keyword rankings alongside yours. You can compare rankings side-by-side, run keyword gap analysis to discover terms competitors rank for that you don't target yet, and track their metadata changes (new versions, description updates, category switches). Competitor intelligence is one of the fastest ways to find keyword opportunities: if a similar app ranks well for a keyword you're missing, that's a signal worth acting on.
Do you offer an API?
Yes. Sonar is built API-first — every data point in the dashboard is also available through our REST API. The Full plan includes 1,000 API requests per day across all endpoints, plus a command-line tool (CLI) for scripting and automation. We also offer an Agent plan at $9/month with unlimited access to 7 stateless endpoints (app lookup, search, ASO score, keyword research, suggestions, reviews, and keyword extraction) designed specifically for AI agents and MCP integrations. API keys use Bearer token authentication with the aso_ prefix. Full documentation with request/response examples is at trysonar.app/docs/api.
What happens after my free trial?
After the 14-day trial, your subscription begins automatically — no action needed. Your data — tracked apps, keywords, ranking history, and competitor groups — is fully preserved. You can cancel anytime during or after the trial from your settings page. The Full plan is $29/month (or $19/month billed annually), and we're currently offering a launch deal: the first 100 customers get 50% off locked in for life.
Popular keyword research
Browse free keyword difficulty scores for popular app categories.
ASO guides
Learn app store optimization from practical, data-driven guides.
- How to Find Low-Competition Keywords
- Keyword Difficulty Explained
- Keyword Research: The Complete Guide
- The Indie Developer's Guide to ASO
- Best Free ASO Tools in 2026
- Apple Search Ads Popularity Score
Your keywords are waiting
Add your app, see where you rank, and find the keywords your competitors missed. Takes about two minutes.
14-day free trial · Cancel anytime