A Practical Store Asset Toolkit for App Developers
App Asset Kit is a browser-based toolkit for independent developers and small teams preparing App Store and Google Play listings. It combines working screenshot and icon generators with source-backed guides, so a specification can lead directly to a finished asset instead of another manual checklist.
What the toolkit does
The screenshot maker accepts up to five real simulator or device captures, adds editable benefit-led copy, applies one of six visual templates, and exports selected iPhone, iPad, Android phone, or Android tablet dimensions as an organized ZIP. The icon tool turns one master image into an Xcode AppIcon.appiconset or an Android Studio resource package.
The tools are designed around practical project handoff: deterministic filenames, project-ready folder structures, opaque PNG output, and platform-specific presets. They do not replace App Store Connect, Play Console, Xcode, Android Studio, or platform review.
How image privacy works
Screenshots, icons, filenames, and custom captions are decoded, rendered, and packaged in the current browser session. App Asset Kit does not upload those assets to an application server. This lets developers work with pre-release interface captures without creating another remote asset library.
Google Analytics loads only after consent and receives product usage events such as page views or completed exports—not image contents, filenames, or custom captions. The privacy page explains the current behavior and how consent can be withdrawn.
How guides and specifications are maintained
Requirement pages link to the relevant first-party Apple, Google Play, or Android documentation and display a review date. Hard platform rules are separated from App Asset Kit’s practical defaults and editorial recommendations. When a specification changes, the source page, generator preset, and related guide should be reviewed together.
Articles add original production frameworks, copy examples, comparison tables, and workflow checks rather than reproducing official documentation. Every recommendation should be traceable either to a platform requirement or to an explicitly labeled practical judgment.
- Prefer first-party platform documentation
- Show the last substantive review date
- Separate requirements from recommendations
- Test generator output against documented dimensions
- Correct factual errors when they are found
What the toolkit cannot verify for you
A technically valid file can still contain inaccurate claims, private data, the wrong localization, or UI from a different build. The generator can validate dimensions and render an opaque image; the person submitting the app remains responsible for product truth, rights, store policy, and the final upload context.
Platform requirements evolve. Use the linked official source as the final authority when a submission warning conflicts with a guide or preset, and report the discrepancy so the toolkit can be updated.
Frequently asked questions
Is App Asset Kit free?
Yes. The current screenshot and icon generators require no account, add no watermark, and do not limit local exports.
Who is App Asset Kit for?
It is designed for independent app developers, designers, and small teams preparing iOS or Android store assets.
Are uploaded images stored?
No. Image processing and ZIP creation happen in the current browser session.
Are the guides official Apple or Google documentation?
No. They are independent practical guides that link to first-party sources. Apple and Google documentation remains the final authority.
Turn the checklist into finished store assets.
Upload real captures, add focused copy, choose the correct device size, and export an organized ZIP in the browser.
Open the free tools