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ASO vs SEO: Key Differences and Similarities

App Store Optimization
Oct 31, 2025

In digital marketing, you’ll often hear that App Store Optimization (ASO) is like Search Engine Optimization (SEO) for mobile apps. At first glance, the comparison makes sense — both focus on keyword optimization, competitor analysis, and improving visibility. However, despite using similar strategies and tools, their goals and methods differ significantly.

What Is ASO?

App Store Optimization (ASO) is the process of optimizing an app’s textual and visual elements to improve its visibility and performance in app stores such as Apple’s App Store and Google Play.

The primary goal of ASO is to increase an app’s organic visibility, conversion rates, and install volume.

Attribute
Value
Format
PNG
Color space
Display P3 (wide-gamut color), sRGB (color), or Gray Gamma 2.2 (grayscale).
See Color Management.
Layers
Flattened with no transparency
Resolution
Shape
Square with no rounded corners
Attribute
Value
Format
PNG
Color space
Display P3 (wide-gamut color), sRGB (color), or Gray Gamma 2.2 (grayscale).
See Color Management.
Layers
Flattened with no transparency
Resolution
Shape
Square with no rounded corners
Word
Frequency in service
Qimai(China)*
AppTweak
Mobileaction
Appfollow
课程 (course)
5387 (high)
56 (mid)
5 (low)
34 (mid)
外语 (foreign language)
5699 (high)
35 (mid)
5 (low)
34(mid)
播放 (play)
5496 (high)
35 (mid)
5 (low)
35 (mid)
*Search index in China provided by Qimai and based on multidimensional calculations such as search results, downloads and relatable keywords.
App Store
Google Play
1. Icon impact on user choice
Important, but not more than a video with screenshots, as they take up most of the screen
Icon is displayed with several other icons in search results, and therefore it has the greatest impact on the user's choice
2. Icon localization
1 icon for all locales
Can be localized for each country
3. Screenshots quantity, orientation
From 1 to 10, any orientation
From 2 to 8, any orientation
4. Screenshots the most important are the ones that are visible before you start scrolling
  • Vertical screenshots: 3 are visible
  • Horizontal screenshots: only the first one is visible
  • Vertical screenshots: 4 are visible
  • Horizontal screenshots: only the first one is visible
5. Screenshots size
Large — the content is legible
Much smaller — the captions are quite illegible
6. Video quantity
Up to 3
One video that must be uploaded to YouTube
7. Video orientation
Any orientation
Horizontal orientation prioritized
8. Video autoplay
Plays automatically for 30 seconds without sound
You need to click on it to play
9. Application cover
Displayed on the application and developer pages
There is no cover
10. Graphics update
After release only
Whenever

What Is SEO?

Search Engine Optimization (SEO) is the process of optimizing a website to improve its visibility in search engines such as Google and Yahoo!

The goal of SEO is to attract users who are actively searching for the information, products, or services that a website offers.

SEO focuses not only on keyword relevance, but also on site performance, mobile-friendliness, and user experience.

Device or context
Icon size
iPhone
60x60 pt (180x180 px @3x)
60x60 pt (120x120 px @2x)
iPad Pro
83.5x83.5 pt (167x167 px @2x)
iPad, iPad mini
76x76 pt (152x152 px @2x)
App Store
1024x1024 pt (1024x1024 px @1x)
Source language
Target language
How much longer (+) or shorter (–) the text in the target language is
English
French
21.18%
English
Spanish
19.52%
English
Italian
17.91%
English
Deutsch
16.67%
English
Dutch
13.80%
English
Portuguese (Portugal)
14.29%
English
Portuguese (Brazil)
12.96%
English
Polish
9.33%
English
Russian
9.11%
English
Czech
3.70%
English
Arab
–6.25%
English
Japanese
–39.68%
English
Korean
–44.04%
English
Chinese (Simplified)
–61.97%
English
Chinese (Traditional)
–63.80%
*Search Ads Popularity (SAP)shows the popularity of the search term from 5 to 99.

Key Differences Between Searching in App Stores and Search Engines 

Understanding how users search in app stores versus search engines helps tailor your optimization strategy for maximum visibility and effectiveness.

How Search Works in App Stores 

When users search in app stores, they typically use short and generic search terms such as “photo editor,” “fitness tracker,” or “planner,” often relying on auto-suggestions rather than typing complete phrases.

After receiving search results, users typically give them a quick scroll-through, focusing mainly on the app icon, title, first screenshots, and occasionally a video preview. If something captures their attention, they open the app page to learn more.

This is why it’s essential to optimize your app page—making it easy to find with relevant keywords while clearly showcasing its value and functionality through visuals such as screenshots and captions.

The example below illustrates how an app’s icon and screenshots work together to create a cohesive, recognizable visual identity. The overlapping ovals with arrows symbolize image transformation, effectively conveying the app’s core purpose. The dark icon and harmonious screenshots maintain a consistent and polished style.

Bold captions highlighting key features make it easy for users to grasp the app’s value at a glance, while screenshots effectively showcase its main functionalities.

This design highlights several issues that diminish visual clarity and effective communication:

  1. The icon employs an abstract symbol, which can create ambiguous associations. Unlike more straightforward designs—where icons clearly convey photo editing through images of cameras, frames, or filters—this design requires users to interpret its meaning, reducing immediate clarity.
The absence of color accents makes the brand less recognizable and harder for users to identify on their home screens.
  1. The screenshots take a different approach to presentation: rather than showing the app’s interface, they display the results of the work in the form of template collections. As a result, users do not see the app’s layout, navigation, or editing process, limiting their understanding of how it functions.
  2. The captions fail to grab attention and do little to communicate the app’s advantages. With a small, hard-to-read font and an unclear message, users are not motivated to download or try the app.

In this case, the visuals prioritize aesthetics over functionality, making them less effective at driving conversions.

How Search Works in Systems Like Google

When using search engines, users tend to enter longer, more specific terms, such as “Kyiv weather,” “exchange rate,” “borsch recipes,” or “online Kyiv map with traffic.”


Search engines provide a multitude of results simultaneously—including links, advertisements, maps, and videos—which can distract users’ attention. Typically, users browse the first page, focusing on headlines, meta descriptions, and featured snippets. If they don’t find the information they need, they either refine their search term or move on to the next page of results.

Search algorithms evaluate the relevance of search terms, as well as the quality and authority of content before displaying results. Unlike app store users, who focus on finding and installing an app, search engine users often browse multiple pages quickly, whereas app store visitors tend to spend more time on individual listings.

Device
Spotlight icon size
Settings icon size
Notification icon size
iPhone
40x40 pt (120x120 px @3x)
29x29 pt (87x87 px @3x)
38x38 pt (114x114 px @3x)
40x40 pt (80x80 px @2x)
29x29 pt (58x58 px @2x)
38x38 pt (76x76 px @2x)
iPad Pro, iPad, iPad mini
40x40 pt (80x80 px @2x)
29x29 pt (58x58 px @2x)
38x38 pt (76x76 px @2x)
Search term
Translation
SAP* English (U.S.)
SAP* English (U.K.)
truck games
games with trucks
62
39
lorry games
games with trucks
32
jail games
prison games
29
8
prison games
prison games
32
24
*Search Ads Popularity (SAP)shows the popularity of the search term from 5 to 99.
Google Play
App Store
What can be tested?
  • Short description
  • Long description
  • Icon
  • Feature graphics
  • Screenshots
  • Videos
  • Screenshots
  • Videos
  • Icon (has to be uploaded to the build*)
Number of simultaneously running tests
5 tests (each test is valid within a single country.

You can choose a default country test (details below): then it will run in all countries where there are no localized graphical or textual materials.
1 test (the test can be immediately extended to all countries where the application is available or opt for specific countries as needed)
The number of test variants that can be tested with the current version in the store
Compared with a maximum of 3 new variants
Can a test be launched while another item is under review?
Yes
No
Mandatory formats for screenshots uploaded to the store
6.5
  • 6.5
  • 5.5
  • 12.9 (if there is an iPad version)
*Build – is a new version of the application. Updating the icon is only possible when updating the application version in the store. In other words, the term "build" refers to a specific version or variant of the application that is ready to be downloaded and installed on the users' devices. It contains all the necessary files and data for users to install and use the application.
More about optimizing graphic elements in the App Store and Google Play can be found in the article 'Graphics in Mobile App Promotion in the App Store and Google Play (ASO) – How to Optimize Graphic Elements.'

What ASO and SEO have in common

Aspect ASO (App Store Optimization) SEO (Search Engine Optimization)
Keyword Research Keywords are incorporated into app metadata: Title, Subtitle, and Keywords field in the App Store; Title, Short Description, and Full Description in Google Play. Keywords appear in page titles, headers, body text, image alt texts, and internal/external links. They help search engines understand the structure and meaning of a webpage.
Visual Optimization Focuses on app icons, screenshots, and video previews. Focuses on images, videos, infographics, and page layout.
Localization Involves adapting text metadata (e.g., “movie” in the US vs. “film” in the UK) and visuals (such as anime-style graphics for Japan, which likely wouldn’t resonate in Poland). Includes localized content (articles, product descriptions) and regional domains or backlinks.
Device size or platform
Screenshot size
Requirement
Screenshot source
6.5 inch (iPhone 13 Pro Max, iPhone 12 Pro Max, iPhone 11 Pro Max, iPhone 11, iPhone XS Max, iPhone XR)
1284 x 2778 pixels (portrait)2778 x 1284 pixels (landscape)1242 x 2688 pixels (portrait)2688 x 1242 pixels (landscape)
Required if app runs on iPhone
Upload 6.5-inch screenshots
5.8 inch (iPhone 13 Pro, iPhone 13, iPhone 13 mini, iPhone 12 Pro, iPhone 12, iPhone 12 mini, iPhone 11 Pro, iPhone XS, iPhone X)
1170 x 2532 pixels (portrait)2532 x 1170 pixels (landscape)1125 x 2436 pixels (portrait)2436 x 1125 pixels (landscape)1080 x 2340 (portrait)2340 x 1080 (landscape)
Required if app runs on iPhone and 6.5 inch screenshots are not provided
Default: scaled 6.5-inch screenshotsAlternative: upload 5.8-inch screenshots
5.5 inch (iPhone 8 Plus, iPhone 7 Plus, iPhone 6s Plus)
1242 x 2208 pixels (portrait)2208 x 1242 pixels (landscape)
Required if app runs on iPhone
Upload 5.5-inch screenshots
5.5 inch (iPhone 8 Plus, iPhone 7 Plus, iPhone 6s Plus)
2048 x 2732 pixels (portrait)2732 x 2048 pixels (landscape)
Required if app runs on iPad
Upload 12.9-inch iPad Pro (3rd generation) screenshots
5.5 inch (iPhone 8 Plus, iPhone 7 Plus, iPhone 6s Plus)
2048 x 2732 pixels (portrait)2732 x 2048 pixels (landscape)
Required if app runs on iPad
Upload 12.9-inch iPad Pro (2nd generation) screenshots
Price
Traffic Source (Self Reporting Networks)
Facebook
Google
X (Twitter)
Apple Search Ads
Cohort reports
Impression tracking
Audience segmentation
At extra charge
Custom Dashboards
Custom Reports
At extra charge
Advertisement Cost
DAU/MAU (Stickiness)
Raw Data Export
At extra charge
At extra charge
At extra charge
API Reporting
Search term
Translation
SAP* French
SAP* French (Canada)
soldes
sale
25
5
aubainerie
sale
14
*Search Ads Popularity (SAP)shows the popularity of the search term from 5 to 99.

ASO vs. SEO: Key Differences

ASO SEO
Platform App Stores (Apple App Store, Google Play, etc.) Search Engines (Google, Microsoft Bing, Yahoo!, etc.)
Algorithm Factors
  • App Metadata
  • App Localization
  • App Performance Metrics (downloads, reviews, engagement)
  • App update frequency
  • Relevance and content quality
  • Backlinks
  • Website speed and stability
  • UX signals
  • Website technical configuration
Frequency of Updates Changes in ASO (such as updates to screenshots or keywords) impact store search results, conversion rates, and app store rankings. In the App Store, results can appear within a few days, whereas in Google Play, it may take several weeks. Search engine results typically take weeks or even months to appear, due to slower indexing and ranking updates.
Performance Analysis
  • Keyword rankings
  • App category position
  • Conversion from page view to install (CVR)
  • Organic installs
  • Page views
  • User reviews and ratings
  • Positions in search results
  • Visibility in search engines
  • Website traffic and brand recognition
  • Cost per target action
  • Cost per visitor acquisition
  • Cost per customer acquisition
  • Improvement of user behavioral factors
Device
Icon size
iPhone
180px × 180px (60pt × 60pt @3x)
120px × 120px (60pt × 60pt @2x)
iPad Pro
167px × 167px (83.5pt × 83.5pt @2x)
iPad, iPad mini
152px × 152px (76pt × 76pt @2x)
App Store
1024px × 1024px (1024pt × 1024pt @1x)
Icon format
PNG
Color models
sRGB or P3 (see "Color Management")
Layouts
Aligned without transparency
Sizes
Shape
Square without rounded corners
All the current requirements for icons are specified in the specification.

The Role of ASO and SEO Specialists

The main difference lies in their objectives:

  • ASO aims to drive app installs
  • SEO aims to increase website traffic

ASO specialists focus on app store listings, while SEO experts work on websites.

Both rely on similar foundations: keyword research, competitor analysis, text optimization, and continuous performance tracking.

But, there are also distinct features:

ASO SEO
Visual optimization of app pages Technical website setup
Textual optimization of metadata Content creation
Managing ratings and reviews Building backlinks
Localizing app pages Adding special tags for display in search engines (price tag, rating tag, etc.)
Selecting the right app category Setting website visibility parameters
Creating custom store pages Optimizing internal site navigation

Icon format
32-bit PNG (with alpha channel)
Color models
512 х 512 pixels
Layouts
1024 КБ
Sizes
square, without rounding and shadows (Google automatically rounds the corners and adds shadows)
All the current requirements are specified in the specification.

How ASO and SEO Work Together

ASO and SEO are distinct but complementary disciplines that can work together to form a unified growth strategy.

SEO introduces users to the brand.

  1. SEO enhances a website’s visibility in search engines.
  2. Users looking for information or solutions to their problems can easily discover the website.
  3. The website can provide information about the app, including reviews, key benefits, and direct links to its pages on the App Store and Google Play.
  4. Thus, SEO establishes the first point of contact with potential users, enhances brand awareness, and drives traffic to the application.

ASO helps convert that traffic into app downloads.

  1. When users click through to the app store, they already have some awareness of the product.
  2. Thanks to optimized text and visuals on the app page, users can clearly see the app’s benefits, creating a positive impression and encouraging them to download it.
  3. ASO serves as the final step in the conversion process.

The key to synergy lies in consistency. For maximum effectiveness, your keywords, CTAs, and visual style should be aligned across both the website and the app store listing page. A unified brand identity builds trust, improves conversion rates, and enhances user retention.

Traffic
Popularity
Keyword
1
385 585
99
instagram
2
325 480
98
whatsapp
3
201 485
95
telegram
4
177 737
94
facebook
5
119 067
91
tik tok
6
92 427
90
ifood
7
80 473
87
tinder
8
69 379
87
capcut
9
65 120
87
nubank
10
64 602
86
uber

Traffic
Popularity
Keyword
Translate (EN)
1
233 158
99
snapchat
snapchat
2
209 668
98
instagram
instagram
3
114 577
94
tik tok
tik tok
4
92 500
93
telegram
telegram
5
70 286
91
facebook
facebook
6
59 302
90
tinder
tinder
7
51 352
89
whatsapp
whatsapp
8
42 468
87
youtube
youtube
9
36 646
86
tiktok
tiktok
10
36 420
86
messenger
messenger

Traffic
Popularity
Keyword
Translate (EN)
1
243 626
99
instagram
instagram
2
122 131
95
snapchat
snapchat
3
74 161
91
tik tok
tik tok
4
67 431
91
whatsapp
whatsapp
5
55 634
89
reddit
reddit
6
40 775
87
youtube
youtube
7
39 319
87
tinder
tinder
8
37 889
87
facebook
facebook
9
37 600
86
telegram
telegram
10
26 225
84
brawl stars
brawl stars

Traffic
Popularity
Keyword
1
123 159
99
instagram
2
91 584
97
snapchat
3
52 253
93
facebook
4
28 524
89
tik tok
5
25 788
88
reddit
6
23 972
88
youtube
7
23 005
88
tinder
8
20 257
87
whatsapp
9
17 652
86
messenger
10
14 431
84
discord

Traffic
Popularity
Keyword
Translate (EN)
1
96 271
99
인스타그램
Instagram
2
66 339
97
vpn
vpn
3
47 883
94
카카오톡
KakaoTalk
4
40 069
93
유튜브
YouTube
5
39 041
93
배달의민족
Delivery ethnicity
6
33 538
92
x
x
7
32 794
92
트위터
Twitter
8
29 047
90
쿠팡플레이
Coupang Play
9
21 262
89
네이버
Naver
10
18 882
88
티빙
Tibing

Traffic
Popularity
Keyword
1
144 520
99
instagram
2
102 720
97
snapchat
3
70 760
94
facebook
4
45 775
91
tik tok
5
26 665
88
youtube
6
25 880
87
reddit
7
24 777
87
tinder
8
21 923
86
whatsapp
9
21 702
86
messenger
10
15 312
84
spotify

Traffic
Popularity
Keyword
Translate (EN)
1
38 906
98
телеграм
telegram
2
24 281
95
telegram
telegram
3
20 773
93
бравл старс
brawl stars
4
17 750
91
пабг
YouTube
5
16 308
91
дія
Delivery ethnicity
6
15 075
91
tik tok
x
7
12 534
90
instagram
Twitter
8
11 554
89
вайбер
viber
9
11 418
89
brawl stars
brawl stars
10
11 205
89
viber
viber

Conclusions

  1. Searching in app stores and search engines involves fundamental differences that shape the optimization approach. In app stores, users typically enter short, general terms with a clear goal: finding and installing the right app. In contrast, search engine terms tend to be longer and more varied.
  2. ASO and SEO operate under different rules. For ASO, the app’s metadata, icon, screenshots, reviews, and localization play a key role, whereas SEO relies on content relevance and quality, website authority, and technical optimization.
  3. It’s also important to consider the difference in how quickly results materialize: changes in ASO can be observed within a few days or weeks, whereas SEO typically requires a long-term approach.
  4. Despite their differences, ASO and SEO complement each other perfectly. SEO introduces users to the brand and helps them discover the website, while ASO converts that traffic into app installs.
  5. The key to an effective strategy is consistency in keywords, visual style, and messaging between the website and the app page. This alignment creates a cohesive brand image, builds user trust, and ultimately boosts conversions.
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