LocalASOAnswers
Quick answers
Short, checked answers to exact App Store questions: limits, sizes, codes and rules, each verified against Apple's documentation.
App store connect
App Review Notes Character Limit
The App Review Notes field accepts up to 4,000 bytes, not characters, and customers cannot see it. What to put in it and how bytes add up.
Apple ads
Apple Ads Search Popularity: What the 1 to 5 Score Means
Apple Ads shows keyword search popularity as 1 to 5, with 5 most popular. What it measures, what it is for and how it differs from a 0-100 volume estimate.
Categories
How Many App Store Categories Are There?
Apple's category definitions page lists 27 App Store categories. The full list, primary and secondary category rules and Games subcategories.
Keyword field
App Store Keywords: 100 Bytes or 100 Characters?
The keyword field limit is 100 bytes in App Store Connect, though Apple's marketing pages say 100 characters. What that means for non-Latin languages.
Can You Use Competitor Names in App Store Keywords?
No. Apple prohibits names of other apps or companies in the keyword list, and calls improper keywords a common rejection reason. What to do instead.
Minimum Keyword Length for App Store Keywords
Apple says each App Store keyword must be greater than two characters. What that means for short terms, abbreviations, CJK languages and spaces.
Spaces After Commas in App Store Keywords
Apple says separate App Store keywords with commas and no spaces. When a space inside a keyword is fine, a byte-saving example and common format errors.
Localization
How Many Languages Does the App Store Support?
App Store Connect supports 50 metadata languages and locales. How fallback works, what a new language copies from the primary one, and the locale codes.
Metadata fields
App Store App Name Character Limit
The App Store app name can be 2 to 30 characters. Where Apple states it, when you can edit it, and how names work per localization.
App Store Description Character Limit
The App Store description is limited to 4,000 characters of plain text. Formatting rules, when you can edit it and what it does for search.
App Store Promotional Text Character Limit
Promotional text can be up to 170 characters, appears above the description and can change without a new version. What it does not do for search.
App Store What's New Character Limit
The What's New text is limited to 4,000 characters per version and language. When it is required, when it is unavailable and what Apple expects in it.
Can You Change Promotional Text Without an App Update?
Yes: Apple says promotional text can be updated at any time without a new version. Which fields cannot be assumed to work that way, and how fast it shows.
How Long Can an App Store Subtitle Be?
An App Store subtitle can be up to 30 characters. Edge cases: counting, localization, when you can change it, and what Apple forbids in it.
Product page
App Store Preview Video Length and Format
App Store app preview videos must be 15 to 30 seconds, up to 500MB and 30 fps. Accepted formats, how many you can add and what they may show.
App Store Screenshot Sizes and Formats
Which App Store screenshot sizes are required, accepted file formats, the Mac resolutions and why you do not need every device size.
How Long Does a Product Page Optimization Test Run?
A product page optimization test runs up to 90 days or until you stop it. Treatment limits, what can be tested, requirements and when results appear.
How Many Custom Product Pages Can an App Have?
An app can have up to 70 custom product pages. What each can change, review requirements, the five-download analytics threshold and search keywords.
How Many Screenshots Can You Upload to the App Store?
You can upload up to 10 screenshots per device size and need at least one. How many show in search results and how previews interact.
In-App Event Name and Description Character Limits
In-App Event name 30 characters, short description 50, long description 120. Plus duration, how many events and where they appear in search.
Ranking
Does Promotional Text Affect App Store Search?
No. Apple states promotional text does not affect App Store search ranking and should not be used to display keywords. What to use it for instead.
Does the App Store Description Affect Search Ranking?
Apple lists name, subtitle, keywords and company name as searchable, not the description. What it is used for instead.
Ratings reviews
Can You Reset App Store Ratings?
Yes: you can reset the overview rating when releasing a new version. It hits all storefronts at once, cannot be undone and does not remove written reviews.
Storefronts
How Many Countries Is the App Store Available In?
App Store Connect help says the App Store is available in 175 countries or regions. How that compares to the localizations table and LocalASO's 52.
Workflow
iTunes Search API Rate Limit
Apple states the iTunes Search API is limited to roughly 20 calls per minute. Parameters, the limit value, caching advice and how to plan bulk lookups.