For Apple developers · 175 App Stores
The app growth platform.
Keywords, screenshots, prices, A/B tests, analytics and Apple Ads in one place. Change it in one click. See what worked.
Works with
SuperwallThe problem
Growing an app shouldn't take six tools. And a lot of guessing.
- 01
Your data lives in six tools.
App Store Connect, an ASO tool, RevenueCat, analytics, Apple Ads and a spreadsheet. None of them talk to each other.
- 02
Every change is handwork.
Texts in many languages, screenshots, prices in 175 countries: click by click in App Store Connect.
- 03
You never know what worked.
You change something, downloads move a little, and nobody can tell you why.
How it works
Change it. Test it. See what worked.
Other tools show you data. Fermium100 also makes the change at Apple, and then tells you if it worked.
Change it in one click
New keywords, texts, screenshots or prices. Checked against Apple's rules and sent to App Store Connect.
Test instead of guessing
Run Apple's A/B tests for your icon and screenshots. Every other change gets its own before and after.
See what worked
Rankings, downloads and revenue before and after each change, next to each other.
“daily affirmationen”
Germany · since Oct 9Our app Becoming climbed to #4, up from #10. Real App Store search.
Product
Everything that grows your app. In one place.
See all featuresGet found for the words people search.
Real searches with popularity and difficulty, your rank in 175 App Stores every day, and texts that use your best words.
- Dozens of real searches from one word
- Every rank, checked every morning
- Texts checked against Apple's rules
Screenshots and icons that convince.
Design them in the Studio from templates, translate them into every language and send them to App Store Connect in one click.
- Templates, 3D phones and hands
- One design, every language and device
- Sent to Apple without a single upload
A fair price in every country.
See what your price is worth in 175 countries, fix the ones that are off and send them all to Apple at once.
- Too expensive or too cheap, at a glance
- New prices for new subscribers only
- Free trials and offer codes included
Test instead of guessing.
Run Apple's A/B tests for your icon and screenshots, and get a before and after for every other change.
- Up to 3 icons or screenshot sets at once
- Before and after for texts and prices
- Real numbers, never estimates
See what really moved.
Impressions, downloads, revenue and retention from Apple and RevenueCat, next to each other on one page.
- Straight from App Store Connect
- Revenue and trials from RevenueCat
- Every number compared with the time before
…and so much more.
Ratings & reviews
Learn from every review
What users complain about, sorted by AI, and replies in every language.
Ads
Apple Ads in the same place
Installs, tap rate and conversion next to your App Store numbers.
Competitors
Know what competitors change
Their keywords, screenshots, prices and every new version.
Search preview
See what people see
The real search results for any keyword, with your app among them.
Funnel
From seen to paying
Where people drop off, from the App Store to the paywall.
Claude & ChatGPT
Ask your data in plain words
Connect Claude or ChatGPT and ask about any of your apps.
Who it's for
Made for one app. Ready for twenty.
Your app is live. Now let's get it downloaded.
- Know what to change: the keywords and texts that bring downloads
- Send it to Apple in one click, no App Store Connect clicking
- See within days if it worked
Starter or Indie plan · 7 days free
All your apps. Every country. One tool instead of six.
- Keywords, prices, tests, revenue and ads for your whole portfolio
- Work at scale: prices in 175 countries, texts in 39 languages at once
- Everyone on the same numbers, with alerts when something changes
Pro or Agency plan · 7 days free
Pricing
Simple plans. Beta prices for our first 100 customers.
Compare all featuresTry any plan free for 7 days. Cancel anytime.
Beta prices for our first 100 customers. Join now and keep your price for as long as you stay subscribed.
Your first app
Starter
Get your first app found.
Beta price · $190 billed yearly
After the first 100 customers: $24 / month
- Apps
- 1
- Keywords
- 100
- Competitors
- 3
- Users
- 1
Everything to get your first app found:
- Daily rankings in all 175 App Stores
- Texts sent to App Store Connect in one click
- Keyword ranking and index checker
- Real downloads from App Store Connect
- 5 AI keyword ideas a month
Up to $2.5K a month in app revenue
Indie
RecommendedGrow a few apps.
Beta price · $490 billed yearly
After the first 100 customers: $83 / month
- Apps
- 5
- Keywords
- 500
- Competitors
- 10
- Users
- 2
Everything in Starter, plus:
- Room for 5 apps and 500 keywords
- Answer reviews, 100 a month
- Alerts when your keywords move
- 20 AI keyword ideas a month
$2.5K – $50K a month in app revenue
Pro
Every way to grow, for your team.
Beta price · $1,490 billed yearly
After the first 100 customers: $249 / month
- Apps
- 10
- Keywords
- 2,000
- Competitors
- 50
- Users
- 5
Everything in Indie, plus:
- Screenshot Studio, custom pages and A/B tests
- Fair prices for every country
- The funnel from store to paying customer
- Apple Ads data and alerts for competitors and bad reviews
- 200 AI keyword ideas a month
AgencyAgencies, studios or $50K+ a month in app revenue
Everything in Pro, as many apps, keywords and users as you need, one price for your portfolio and a direct line to us.
All prices in US$. Taxes, where they apply, are shown at checkout.
What is Fermium100?
An app growth platform for Apple developers. Keywords, product page, prices, A/B tests, analytics, reviews, Apple Ads and competitors in one place. You change things in one click and see what worked.
Is it only for ASO?
No. ASO is where most people start: getting found in App Store search. From there it goes on to your product page, prices, tests, analytics and ads.
Who is it for?
Solo developers whose app is live but not growing yet, and app businesses with a small team and several apps. Agencies can ask us for an Agency plan.
Does it replace my other tools?
For many it replaces the ASO tool, the price spreadsheet and most of the clicking in App Store Connect. RevenueCat and Apple Ads stay: we connect to them and show their numbers next to yours.
Does it work for Android?
Not yet. We focus on Apple first: the App Store in 175 countries.
Where does the data come from?
Straight from Apple, from App Store search we check every day, and from our own models, which are always marked. How our data works
Does it work with Claude and ChatGPT?
Yes. Connect Fermium100 to Claude or ChatGPT and ask about your app in plain words.
How does the free trial work?
You try your plan for 7 days. Cancel before the 7 days end and you pay nothing. Otherwise your plan starts at the beta price.
Can I cancel any time?
Yes. Cancel any time, and your plan runs until the end of the period you paid for.