Keyword Research
Find high-volume, low-competition keywords across 180+ countries and every app category.
For research →Grow your app's organic downloads
The ASO platform for indie iOS developers. Research keywords, track ranks daily, and ship optimized App Store metadata in 180+ countries.
or
2.4M+
Keywords tracked
180+
Countries supported
+38%
Organic growth in 60 days
Gymnio 
Pocketz 
FrostVault 
RowTally 
Pi Digits Data and tools for the whole ASO loop
Research, tracking, metadata, reviews and shipping in one workspace, so the work you plan is the work that ships.
Rank Tracking
Daily App Store positions with 90-day historical charts and instant alerts on movement.
For tracking →AI Metadata Optimizer
Scored AI suggestions with the reasoning attached, plus a ranked ASO Score action plan.
For metadata →Competitor Analysis
Competitor keywords, metadata, screenshots, monetization and AI-summarized reviews, plus keyword gap reports.
For competitors →Review Management
Every App Store review, from every territory, in one list with rating trend charts over time.
For reviews →Keyword Tracking
Daily keyword rankings per country and locale across 180+ markets in one dashboard.
For markets →Screenshot Pipeline
XCUITest captures your app on real simulators, frames every device size, and uploads straight to App Store Connect.
For screenshots →Version Management
Add a language and auto-translate generates a full localized metadata set instantly.
For locales →Build Automation
Signed builds on every GitHub push, compiled on cloud macOS workers -- no Mac required.
For shipping →Monetization
Manage in-app purchases and subscriptions, with Smart Pricing across ~175 territories -- preview every change first.
For revenue →MCP Server
Your ASO, automated. Claude and Cursor get live access to your data -- and write access to App Store Connect.
For automation →From keyword to shipped metadata
Most ASO tools stop at research. Marteso carries a decision through to the App Store listing, in every locale you sell in.
Every change arrives scored
Suggestions queue up by type — keywords, title, subtitle, description — each with a confidence score and a pending state until you approve it.
One metadata set
translated into every storefront
EN
100 ch
DE
100 ch
ES
100 ch
JA
100 ch
KO
100 ch
RU
100 ch
Every locale is another keyword field
Add a language and auto-translate generates the full localized set: title, subtitle and the 100-character keyword field, per storefront.
The reasoning, not just the output
Read exactly which intent a keyword bank targets, which terms it avoids repeating, and how it stays inside the 100-character cap.
Get started in minutes
Connect App Store Connect with read-only OAuth, import an app, add your first keywords. The Starter plan is free forever.
See the docs → 1.
Connect App Store Connect
OAuth 2.0, read-only. Nothing is written without your review.
2.
Import an app
Metadata, locales and current ranks come across automatically.
3.
Add your first keywords
Track up to 50 on the free Starter plan, updated daily.
+38%
average organic
growth in 60 days
growth in 60 days
Indie apps that run a full keyword-to-metadata loop on Marteso see +38% more organic growth after 60 days.
Read the methodology →Driving results for the apps we work with
Gymnio
Workout tracker
Marteso turned ASO from a quarterly guess into a weekly routine. We see which keywords move, ship the metadata the same day, and the localized fields no longer sit half-finished.
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Pocketz
Personal finance
Placeholder quote — send us the real one. What it should cover: how keyword research changed the way the team picks a title and subtitle each release.
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FrostVault
Freezer inventory
Placeholder quote — send us the real one. What it should cover: finding a niche keyword set in a category with almost no search volume to spare.
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RowTally
Rowing log
Placeholder quote — send us the real one. What it should cover: daily rank alerts catching a drop before it cost a week of downloads.
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Pi Digits
Memory trainer
Placeholder quote — send us the real one. What it should cover: competitor tracking showing which terms the category leaders had left uncovered.
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Priced per app, not per seat
Start on the free plan and upgrade when a second app earns it.
Starter
For indie developers shipping their first app and learning what ranks.
Free
forever, no card required
Start for free
or see the docs
What's inside:
- 2 apps
- 50 keywords per app
- Daily rank updates
- 3 competitors per app
- Review inbox
- AI metadata optimizer
- Weekly email reports
Most popular
Pro
For developers running several apps who ship metadata every release.
€15 /mo
€18 per app, billed annually
Try for free
or subscribe
Everything in Starter, plus:
- Unlimited apps
- 500 keywords
- AI metadata optimizer
- Unlimited competitors
- Weekly email reports
Agency
For studios and agencies managing client portfolios with reporting.
Custom
talk to us about volume
Contact sales Everything in Pro, plus:
- White-label reports
- Client workspace management
- API access
- Dedicated account manager
Start ranking for the keywords you deserve
Two apps, 50 keywords each and daily rank updates on the free Starter plan. No card required.