ButterKit 3.0: new App Store sizes, Header and Search Results artwork, and a faster UI
ButterKit 3.0 adds the new App Store Connect iOS sizes with one-click migration, Header and Search Results artwork, and a dedicated metadata manager.
What's in this release
NEW New Features
- New App Store sizes. New projects start at the correct size, and older projects can migrate to it in one click. Legacy sizes stay available.
- Header, Search Results, and iPhone Duo artwork. Create and export the new App Store artwork types.
- Metadata manager. A dedicated home for your app metadata, with sync tools like fetching individual sections from App Store Connect.
- Latest App Store Connect API. Uploads now show progress for each language.
- Faster, more organized UI. Ready for macOS 27.
- New artboard options. iPhone 6.1" and 6.3" (1206 × 2622) and iPhone Duo (2007 × 2853).
- Rotate 3D devices on the canvas.
- Arrow-key navigation. Move between artboards and selected localizations with your keyboard. (thanks habitoti)
- Improved color swatches.
- More MCP tooling for AI agents.
FIX Bug Fixes
- Quieter version control. Opening a project with linked screenshots no longer creates unnecessary changes. Unchanged images keep their existing IDs. (thanks u/markb)
- Launch crash fixed. The app no longer crashes when opening on some screen resolutions. (thanks u/boulderdashed)
Full Release Notes
ButterKit 3.0 is here, and it’s the biggest update yet. Apple introduced new iOS screenshot sizes in App Store Connect, so ButterKit now starts new projects at the right size and offers to move your existing screenshots over in one click. Your legacy sizes stay available if you need them.
There’s also new App Store artwork to design (Header, Search Results, and iPhone Duo), a dedicated home for your app metadata, and a faster, more organized interface that’s ready for macOS 27.
A big thank you to habitoti, u/markb, u/boulderdashed, and everyone who reported bugs and shared ideas. Several of these changes came straight from your messages.
Smooth shipping,
-Zach
