Updated ASO teardown, US App Store
PredictWind — Marine Forecasts 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
- 20K−33.5% vs previous month
- Est. monthly revenue
- $200K−0.3% vs previous month
- Est. revenue ÷ downloads
- $10.00
- Rating
- 4.8★32.9K 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
10 screenshots of up to 10, the first 6 shown here. The first 3 show in search results when there's no preview video.
#1In search results
PredictWind.com THE WORLD LEADER
- What it shows
- A brand logo with the line “THE WORLD LEADER”, above a tilted phone showing a Weather Routing screen: a wind-colored map with route lines and a Map/Tables switch.
- Why it converts
- The map is a real in-app scene, so a visitor sees that this is about wind and routes. There is no caption saying what the app does, so the brand line carries the message and the map has to explain the rest.
#2In search results
The World Leader in Wind Forecasting
- wind forecastingnot in name
- What it shows
- The right half of the tilted phone from the first image, with route lines on a wind map, and the line “The World Leader in Wind Forecasting” at top right.
- Why it converts
- The first two images read as one wide picture, so the caption finishes the thought from the logo. It names the product category, which the first image does not. It is a claim the app makes about itself.
#3In search results
Forecasts
- forecastsin name
- What it shows
- A list of forecast types for Hawaii: Daily Briefing, Tables, Graphs, and Wind, Gust, CAPE, Wave, Rain, Cloud and Isobar maps, plus temperature and more.
- Why it converts
- A long menu shows how many kinds of forecast the app holds. The one-word caption is large and easy to read, but it says little about what the visitor gets from the list.
#4
Tables
- tablesnot in name
- What it shows
- A forecast table for Hawaii with colored rows of numbers by day and hour, including wind speed in knots, waves, pressure and temperature.
- Why it converts
- Color-coded cells show that dense data can be scanned fast. The dense numbers are small at thumbnail size, so the caption has to carry the message.
#5
Wind Maps
- wind mapsnot in name
- What it shows
- A full-screen wind map of Hawaii in purple, green and red, with a time slider, a play button and a knots color scale.
- Why it converts
- The most visual feature gets a plain, large caption that names a thing people look for. The color map is striking even when small. The caption names the feature but not the benefit.
#6
Observations
- observationsnot in name
- What it shows
- A map of Auckland Central with colored wind readings from stations and a Table, Map, Graph switch.
- Why it converts
- Live readings on a map suggest the data is current and local. The caption is a feature name only, and the many small number labels are hard to read at thumbnail size.
Icon and design system
What makes the page read as one brand at a glance.
- One symbol, a sail over waves, points to sailing and the sea before the name is read.
- The blue gradient matches the blue background used in the screenshots, so icon and gallery look like one brand.
- It has no text and little fine detail, so it should hold up at small sizes.
- 01
Plain feature-name captions
After the first two images, each caption is one or two words: Forecasts, Tables, Wind Maps, Observations. They are easy to read and name the feature, but they do not state a benefit.
- 02
Blue background, one phone
Most images use the same blue gradient, a white centered caption and a single phone. The set looks like one system.
- 03
Wide image across two screenshots
The first two images show one tilted phone split across the gap. A visitor who swipes sees the picture continue.
- 04
Real data screens as the visual
Wind maps, tables and station readings come from the app itself, not from stock art.
- 05
Brand claim in place of a benefit
The set leads with “THE WORLD LEADER” and “The World Leader in Wind Forecasting”. This is the app's own claim, and no rating, award or user count is shown beside it.
ASO score breakdown
86 of 100 points. The full rule is under “How the ASO score works” below.
- App name25 / 25
- Uses 30 of 30 characters10/10
- Brand + keyword phrase10/10
- Keywords fill half the name or more5/5
- Screenshots23 / 35
- Caption on every screenshot5/5
- Each caption names a feature people search for8.3/10
- First screenshot shows the main use0/5
- One consistent design system5/5
- Readable at search-result size5/5
- Trust signal0/5
- Ratings23 / 25
- 4.8 average (full marks at 4.8)15/15
- 32,903 ratings (full marks at 100,000)7.6/10
- Freshness15 / 15
- Last update 2 days ago (full marks within 30)15/15
Where the points are
- Ask happy users for a rating+2 pts
4.8 stars from 32,903 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.
- Check caption terms against your subtitle and keywords
4 caption terms aren't in the app name: wind forecasting, tables, wind maps, observations. Captions don't count for search; the subtitle and the 100-character keyword field do.
Apply it to your app
A checklist for your next product page update.
- Put a caption on screenshot 1 that says what the app does, not only who you are.
- Write captions as a benefit, not only a feature name.
- Keep one background, one caption position and one device style across the set.
- Use your most striking real screen as the visual, and make sure its text is readable when small.
- If you claim to be the leader, add a rating, award or number that supports it.
- Name features with the words your users use, such as “Wind Maps”.
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. A common pattern is a short brand followed by the main thing people search for, like “PredictWind — Marine Forecasts”, which uses 30. 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. PredictWind uses them for wind forecasting and forecasts.
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. PredictWind uses 10.
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.
- PredictWind — Marine Forecasts 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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