# Free ASO tool for your App Store listing [Free tools](/tools) # Free ASO tool for your App Store listing Paste your App Store metadata and see what Apple will accept. Every field is checked against its limit and App Review’s metadata rules, wasted keyword bytes are flagged, and the preview shows your listing with the slides you designed in AppScreen. ![](/__reroute_image?url=%2Fassets%2Ficon-512.png&w=56&q=75) AppScreenPanorama App Store screenshotsGet ### What’s New Version 1.0 Free tools: iPhone and iPad mockups, an app icon maker and a feature graphic generator. ### Preview [ ](/)[ ](/)[ ](/) Your slides show here once you design them in [AppScreen](/). Design one wide panorama and AppScreen slices it into App Store-ready slides. $9 once. AppScreen is a panorama editor for App Store screenshots. Design across all your slides on one canvas, drop in iPhone and iPad frames, and let phones cross the seams. Export every size Apple asks for, without transparency, in one click. Works in your browser. Free for one app; Pro is $9, paid once. more - App name length9 of 30 characters. - Subtitle30 of 30 characters, no repeats from the name. - Keyword field31 of 100 bytes unused. Every byte is a chance to rank. - Keyword waste18 bytes go to spaces, repeats or words already in your name or subtitle. See the keyword check below. - Prices and claimsNo pricing words or “best/#1” claims. - Other apps and trademarksNo popular app names found. - “For Kids” wordingNot used. - Promotional text86 of 170 characters. - DescriptionFilled. Only the first three lines show before “more”, so lead with the best one. App name9 / 30 charactersAt least 2 characters. Indexed for search.Subtitle30 / 30 charactersShown under the name. Indexed for search.Keywords69 / 100 bytesComma-separated, 100 bytes. Not shown to people.Promotional text86 / 170 charactersDesign one wide panorama and AppScreen slices it into App Store-ready slides. $9 once.Above the description. Editable without a new build. Not indexed.Description301 / 4000 charactersAppScreen is a panorama editor for App Store screenshots. Design across all your slides on one canvas, drop in iPhone and iPad frames, and let phones cross the seams. Export every size Apple asks for, without transparency, in one click. Works in your browser. Free for one app; Pro is $9, paid once.Plain text. Not indexed for search on the App Store.What's New87 / 4000 charactersFree tools: iPhone and iPad mockups, an app icon maker and a feature graphic generator.Release notes. Required from the second version on. - 1 space after commas waste 1 byte. Apple splits on commas. - "Mockup" is repeated. - "app store" is already in your name or subtitle, which Apple indexes. ``` screenshot,mockup,generator,aso,iphone frame,design ``` Copy7 of 9 App Store checks passWithin limits ## How it works - Fill in the name, subtitle and keywords, then the promotional text and description. - Read the App Store checks: limits, wasted keyword bytes, pricing words, other apps’ names and reserved wording. - Fix what’s flagged or copy the cleaned keyword list, and check the preview before you paste it all into App Store Connect. ## Questions ### What are the App Store limits? App name: 2 to 30 characters. Subtitle: 30. Keywords: 100 bytes, comma-separated. Promotional text: 170. Description and What's New: 4,000 each. ### Which fields count for App Store search? The app name, subtitle and keyword field. Promotional text and the description are for people, not the search index. ### Can I use words like “free” or “best”, or other apps’ names? Not in the name, subtitle or keywords. App Review Guideline 2.3.7 rules out pricing, unverifiable claims, trademarks and popular app names in metadata. The checks flag them. ### Should I put spaces after commas in keywords? No. Apple splits on commas, so a space is a wasted byte. Write keywords like this: screenshot,mockup,panorama. ### Where do the preview screenshots come from? From the design open in the AppScreen editor in this browser. Nothing is uploaded; if you haven’t designed slides yet, the preview shows placeholders. **App Store screenshots, designed as one panorama**Free: 3 projects, up to 5 slides, iPhone. Pro: $9 once, no subscription.[See pricing](/pricing)[Start designing](/) ## More free tools [ iOSiPhone mockupScreenshot in an iPhone frame, transparent PNG.](/tools/iphone-mockup)[ iOSiPad mockupScreenshot in a 13″ iPad Pro frame, transparent PNG.](/tools/ipad-mockup)[ iOS + AndroidApp icon makerPick a glyph and colors, get a ready app icon.](/tools/app-icon-maker)[ iOS + AndroidApp icon generatorOne 1024 image to an Xcode icon set and Android mipmaps.](/tools/app-icon-generator)[ AndroidFeature graphicThe 1024×500 Play Store banner, to Google’s rules.](/tools/feature-graphic-generator)[ iOSScreenshot resizerEvery App Store size from one screenshot, no alpha.](/tools/app-store-screenshot-resizer)[ iOSPanorama splitterCut one wide design into seamless App Store slides.](/tools/panorama-splitter)[AppScreen](/) Panorama screenshots for the App Store. © 2026 [Intenseloop, Inc.](https://intenseloop.com)[ ](https://x.com/intent/follow?screen_name=stewones) _____ _____ /\ / ____| | __ \ / \ _ __ _ __| (___ ___ _ __ ___ ___ _ __ | |__) | __ ___ / /\ \ | '_ \| '_ \\___ \ / __| '__/ _ \/ _ \ '_ \ | ___/ '__/ _ \ / ____ \| |_) | |_) |___) | (__| | | __/ __/ | | | | | | | | (_) | /_/ \_\ .__/| .__/_____/ \___|_| \___|\___|_| |_| |_| |_| \___/ | | | | |_| |_| ## AppScreen Pro One payment. Yours forever. - Unlimited projects - Up to 10 slides, the App Store maximum - Unlimited presets 4 more Continue — $9