Updated ASO teardown, US App Store
HeartSnap:Health Tracker App Store optimization
A Health & Fitness 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
- 23K−27.7% vs previous month
- Est. monthly revenue
- $100K−53.9% vs previous month
- Est. revenue ÷ downloads
- $4.35
- Rating
- 4.5★5K 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
Track Your Heart Live Smarter All-in-one heart health tool
- heart healthnot in name
- What it shows
- A phone showing a heart rate dial at 79 bpm with small HRV figures and a “More health data” list, next to a cartoon older man holding a phone.
- Why it converts
- Names the app's job in the first line and shows a heart rate reading right away. The cartoon figure adds a friendly face, but it covers part of the screen.
#2In search results
Measure Your Heart Anytime Quick, easy pulse check
- pulse checknot in name
- What it shows
- The back of a phone with its flash lit, and a front phone showing a 73 BPM ring, a pulse line and a “Measuring” timer, held in a hand.
- Why it converts
- Shows how a reading is taken, which answers the first question a visitor has. “Pulse check” is a plain phrase people use for this task.
#3In search results
Apple Health, Connected One clear view of your health
- apple healthnot in name
- What it shows
- Steps and sleep cards on a phone, a trend chart behind them, an Apple Watch at lower left and a 3D figure checking a watch.
- Why it converts
- Names a platform people already use, which may matter to someone with a health app already set up.
#4
Know Your Heart's Real Age See your heart score
- heart scorenot in name
- What it shows
- A heart score card (78 out of 100, 78 BPM, HRV, stress and energy) over an EKG chart, with a 3D heart illustration.
- Why it converts
- A single score gives a visitor a reason to try the app to see their own number. The card is enlarged past the phone frame, so the number stays easy to read.
#5
Manage Blood Sugar with Ease Log and view sugar trends
- blood sugarnot in name
- What it shows
- A history list of blood sugar entries with colored status tags, and a floating chart card titled “Compare with same age”.
- Why it converts
- Speaks to a different need than heart rate. “Log and view” tells the visitor they record entries themselves and see trends over time.
#6
Keep Your Blood Pressure in Check Simple BP tracking
- blood pressurenot in name
- bp trackingnot in name
- What it shows
- A blood pressure dial reading 76/84 mmHg with a status tag, and a trend card with systolic and diastolic lines.
- Why it converts
- Adds another health number people look up by name. “Simple” sets the tone: a tracker that is easy to use.
Icon and design system
What makes the page read as one brand at a glance.
- One red heart with a pulse line says “heart” before the name is read.
- The fingerprint adds a second idea.
- Red and pink match the screenshot backgrounds, so icon and gallery look like one brand.
- No text, and the heart shape holds up at small sizes.
- 01
Two-tone captions
A red line and a black line in bold type on a pink striped background. The color change splits headline from detail.
- 02
Most screenshots show one health number
Heart rate, heart score, blood sugar and blood pressure each get their own image, so each matches one need.
- 03
Cards pop out of the phone
Several screens have a card or chart placed over the frame, so the key figure is easy to see.
- 04
3D figures and illustrations
A cartoon man, a 3D heart and a figure with a watch add warmth. In some images they share space with the screen.
- 05
A platform name in a caption
One caption names Apple Health, a term people already know, to tell visitors the app works with it.
ASO score breakdown
78 of 100 points. The full rule is under “How the ASO score works” below.
- App name23 / 25
- Uses 24 of 30 characters8/10
- Brand + keyword phrase10/10
- Keywords fill half the name or more5/5
- Screenshots30 / 35
- Caption on every screenshot5/5
- Each caption names a feature people search for10/10
- First screenshot shows the main use5/5
- One consistent design system5/5
- Readable at search-result size5/5
- Trust signal0/5
- Ratings13 / 25
- 4.5 average (full marks at 4.8)9.4/15
- 4,981 ratings (full marks at 100,000)3.5/10
- Freshness12 / 15
- Last update 61 days ago (full marks within 30)11.9/15
Where the points are
- Ask happy users for a rating+12 pts
4.5 stars from 4,981 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.
- Ship an update+3 pts
The last update was 61 days ago. A new version also refreshes the "What's New" notes people read before they download.
- Use the rest of the app name+2 pts
6 characters are free. Add the next most important search term.
- Check caption terms against your subtitle and keywords
7 caption terms aren't in the app name: heart health, pulse check, apple health, heart score, blood sugar, blood pressure, bp tracking. 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.
- Name the app's main job in the first caption line.
- Give each health or data feature its own screenshot and its own caption.
- Keep captions to one short line where you can.
- Enlarge the key number or chart past the device frame.
- Keep decoration from covering the screen you want people to read.
- Add a printed rating, award or user count if you have a real one.
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 “HeartSnap:Health Tracker”, which uses 24. 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. HeartSnap uses them for heart health, pulse check and apple health.
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. HeartSnap 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.
- HeartSnap:Health Tracker 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.
Related
Your product page wins the install.Know which campaign sent it.
Airbridge Core shows which Meta, TikTok, Google and Apple Ads campaign brought each user and what they paid. Trusted by 1,000+ brands processing 100B+ events a month. $40+/mo after a 30-day free trial, no annual contract.