Updated ASO teardown, US App Store
Earthquake Network App Store optimization
A Weather app's App Store page, taken apart: the screenshots and why each one helps people decide to download, the icon and design system, and an ASO score out of 100.
- Est. monthly downloads
- 5K+1.8% vs previous month
- Est. monthly revenue
- $90K+1.8% vs previous month
- Est. revenue ÷ downloads
- $18.00
- Rating
- 4.6★2.2K ratings
Downloads and revenue are third-party est. for the US App Store, latest month vs the month before. Revenue includes renewals, so revenue ÷ downloads is a rough ratio, not what a new user pays. Estimates as of ; rating and dates from the App Store, .
Screenshots and why they convert
6 screenshots of up to 10. The first 3 show in search results when there's no preview video.
#1In search results
- What it shows
- A phone alert reads “Earthquake M5.5 (preliminary) detected at 150 km (Test), 149 km from you. Direction N”, “Seismic wave in 19 seconds” and “Expect strong shaking”, above a map of California with the epicenter and the user's dot.
- Why it converts
- Shows the product in use on the first image: an alert with a countdown. A visitor sees what the app does at once. No caption names it, so the idea rests on the alert text alone.
#2In search results
- What it shows
- The Alerts tab with a green “Real time alert” card, “Test alert” and “Simulator” buttons, a past-alerts count (“Last 24h: 4”, “Since 2013: 8.655”) and “75.039 smartphones are monitoring for earthquakes”.
- Why it converts
- The network size and the “Since 2013” count are printed on the screen, so they work as data the visitor can read. The text is small at search-result size.
#3In search results
- What it shows
- The Reports tab with “783 reports in the last 24h”, X, Map and Telegram buttons, and an “I felt an earthquake!” list of intensity levels from II to VII in colored bars.
- Why it converts
- Shows that users can report what they felt, a second way to use the app. The colored scale is easy to scan, but nothing on the image says why it matters.
#4
- What it shows
- The Quake List tab with pastel cards: location, magnitude, time, distance from the user, coordinates, people within 100 km, and “Source: USGS”.
- Why it converts
- A named data source (USGS) is printed on the card, which gives a visitor a reason to trust the list. The card is dense, so a viewer has to read closely.
#5
- What it shows
- A second Quake List style with outlined rows: magnitude, place, time ago and distance. Some place names are in Spanish.
- Why it converts
- Shows a plainer view of the same list. It repeats the previous idea, and the mixed-language place names add noise.
#6
- What it shows
- A map of the US west coast with magnitude labels (M6.0, M3.5 and others), a red circle for the radius, and a “Last day” button.
- Why it converts
- Gives a quick view of recent activity around the user. The labels overlap in the busiest area and are small, so the map is hard to read at a glance.
Icon and design system
What makes the page read as one brand at a glance.
- One idea: a red pulse line over a network globe. It points to seismic activity and a network of devices.
- No text on the icon, and the red line on a white ground stays clear at small size.
- The blue and red do not appear as a system in the screenshots, which show plain app screens with other colors.
- 01
No printed captions
The images are raw app screens with no headline text. The store page has to be understood from the UI alone.
- 02
Alert first, then the tabs
The first image shows an alert with a countdown. Most of the next ones walk through the tabs: Alerts, Reports and Quake List.
- 03
Numbers printed on the UI
“75.039 smartphones”, “783 reports in the last 24h” and “Source: USGS” are all on screen. They give the visitor concrete facts without a badge.
- 04
Dense lists and small text
Quake cards carry several data points. At search-result size the text will be hard to read.
- 05
Mixed list styles
Two Quake List images use different card styles and colors. The set reads as a tour of screens, not one designed story.
ASO score breakdown
44 of 100 points. The full rule is under “How the ASO score works” below.
- App name6 / 25
- Uses 18 of 30 characters6/10
- Brand + keyword phrase0/10
- Keywords fill half the name or more0/5
- Screenshots10 / 35
- Caption on every screenshot0/5
- Each caption names a feature people search for0/10
- First screenshot shows the main use5/5
- One consistent design system0/5
- Readable at search-result size0/5
- Trust signal5/5
- Ratings13 / 25
- 4.6 average (full marks at 4.8)11.2/15
- 2,197 ratings (full marks at 100,000)1.7/10
- Freshness15 / 15
- Last update 14 days ago (full marks within 30)15/15
Where the points are
- Use the rest of the app name+19 pts
12 characters are free. Add the next most important search term.
- Ask happy users for a rating+12 pts
4.6 stars from 2,197 ratings. Apple's in-app rating prompt can be shown up to 3 times a year; show it right after a user finishes something in the app.
Apply it to your app
A checklist for your next product page update.
- Open with the product doing its job, not a menu or a list.
- Add a short headline to every image. Raw UI alone leaves the visitor to guess.
- Print real numbers and named data sources on screen when you have them.
- Crop or enlarge the one thing each image is about, so it reads at thumbnail size.
- Use one card style and one color scheme across images.
- Do not repeat the same screen twice. Give each image a different reason to install.
How the ASO score works
- 01
App name, 25 points
Up to 10 for how much of Apple's 30 characters it uses, 10 for a brand + keyword structure, 5 when keywords fill half the name or more.
- 02
Screenshots, 35 points
Captions on every image, captions that name searched features, a first screenshot that shows the main use, one design system, readability at search size, and a trust signal.
- 03
Ratings, 25 points
Up to 15 for the average (from 4.0, full marks at 4.8) and 10 for the count (from 1,000, full marks at 100,000 ratings).
- 04
Freshness, 15 points
Full marks for an update in the last 30 days, falling to zero at 180 days. 85+ is excellent, 70+ strong, 50+ fair.
Common questions
What is an ASO score?
A 100-point check of the parts of an App Store page you control: the app name, screenshots, ratings and how recently the app was updated. It's our own scoring rule, shown in full on this page, not a number from Apple. Use it to compare your page with apps that already sell well in your category.
How long can an app name be on the App Store?
30 characters. Apple also gives you a 30-character subtitle and a 100-character keyword field for more terms.
Which screenshots show up in App Store search results?
The first one to three, when the app has no preview video. That's why the first three should cover the main reasons people download.
How many screenshots can an iPhone app have?
Up to 10 per device size. Apple recommends focusing each screenshot after the first on one main benefit or feature. Earthquake Network uses 6.
Where do the download and revenue numbers come from?
They're third-party estimates for the US App Store, not figures reported by the developer. Treat them as a sense of scale. Growth compares the latest month with the month before.
Do screenshot captions help an app rank in search?
Apple says search results use text matches in the app name, subtitle, keywords and primary category, plus user behavior such as downloads, ratings and reviews. Captions aren't on that list: they help people who already see the app decide to download. When a caption names something people search for, put that term in the keyword field too.
Where the numbers come from
- Apple: Creating your product page
- App name limit (30 characters), up to 10 screenshots, the first one to three shown in search results, keyword field.
- Apple: App Store search
- Search results use text relevance (name, subtitle, keywords, primary category) and user behavior (downloads, ratings, reviews).
- Apple: Ratings, reviews and responses
- The in-app rating prompt can be shown up to three times in a 365-day period.
- Earthquake Network on the App Store
- Name, developer, category, icon, screenshots, rating, release and update dates (US storefront), checked Nov 4, 2026.
- Downloads and revenue
- Third-party est. for the US App Store, latest month, pulled Oct 29, 2026. Not reported by the developer.
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