AppShotMaker

AppShotMaker is a free online toolkit for indie developers who ship iOS and Android apps. It helps you create App Store and Google Play screenshots that match official size requirements, check store dimensions and compliance, and craft ASO keyword sets with character counts. Use it when you need multi-device mockups, store listing assets, and keyword planning without paying for a desktop design suite. The product site also offers design navigation and downloadable resources for makers. Start at https://appshotmaker.com — no install required for the core web tools.
App Store screenshots have to fit Apple's current device sizes, and Google Play listings have their own image rules. AppShotMaker is built around those store constraints so an indie developer can prepare listing images in the browser instead of opening a full desktop design application. You can review screenshot dimensions, compare them with the sizes each store expects, and catch a mismatch before you upload a build or a store listing. That size check is useful when a phone frame, a tablet frame, or a feature graphic is the wrong pixel width or height.
The toolkit also covers the words that sit next to those images. App Store Optimization depends on a short name, a subtitle, a description, and a keyword field that each have character limits. AppShotMaker includes keyword planning with live character counts so you can see when a phrase is too long, trim it, and keep a set of terms you actually intend to target. The goal is practical listing prep: screenshots, size checks, and keyword drafts in one place.
Typical work looks like this. Open https://appshotmaker.com in a desktop browser. Choose the store you are shipping to, App Store or Google Play. Pick the device or asset type you need. Generate or arrange a screenshot layout that follows the published size. Check the output dimensions against the store requirement. Export the image for your listing. Then move to the keyword helper, paste candidate phrases, and read the character count before you copy the final set into App Store Connect or the Play Console. No desktop install is required for these core web tools.
Indie developers often ship alone, so the product stays free and focused. It does not replace Xcode, Android Studio, or a full illustration program. It is a listing helper: multi-device mockup layouts, store listing assets, dimension and compliance checks, and ASO keyword sets with counts. The site also points to design navigation and downloadable resources for makers who want reference material while they prepare a release.
If you are updating an existing app, the same flow applies to a new version. Recheck screenshot sizes when Apple or Google changes a device class. Refresh keyword drafts when your positioning changes. Keep the official site, https://appshotmaker.com, as the place to start. AppShotMaker is for people who build and ship their own apps and want store screenshots and keyword planning without a paid design suite.