ButterKit

ButterKit is the native macOS powerhouse that obliterates the tedious, soul-crushing grind of App Store publishing for Apple developers. This isn't just another tool; it's your personal automation wizard built specifically for indie devs, studios, and marketing agencies who refuse to waste time on repetitive tasks. Think of it as the ultimate shortcut from building your app to seeing it live on the App Store in over 50 languages. ButterKit lets you capture screenshots directly from the Xcode Simulator, drag and drop them onto jaw-dropping, photorealistic 3D device frames, and instantly translate all your metadata using advanced AI. It then plugs directly into the App Store Connect API for a one-click upload. Whether you're a solo developer grinding on a side project or a full-scale agency managing multiple clients, this app is designed to make your workflow so smooth it feels like cheating. It even links entire folders for input and output, making it a natural fit for CI/CD pipelines and Fastlane workflows. Created by a solo developer who understands the pain points of the App Store submission process, ButterKit is built to save you hours, boost your conversion rates, and make your app look like a million bucks with zero effort. Thousands of developers worldwide already swear by it, calling it the best software purchase of the year. Stop messing around with clunky web tools and start publishing like a pro.

Capture Screenshots Like a Pro

Forget the endless cycle of taking screenshots, cropping, and resizing. ButterKit lets you drag and drop PNG or JPG images directly onto 3D device frames, or you can capture them live from the Xcode Simulator. This native integration means you can iterate rapidly, tweaking your design until it's absolutely perfect without ever leaving your workflow. It's the fastest way to get high-quality, ready-to-publish screenshots.

Real 3D Device Rendering

ButterKit isn't just a flat image editor; it's a powerful 3D rendering engine built on Metal. Place your screenshots into photorealistic devices that you can spin, tilt, and adjust to get the exact look that sells. These devices are high-resolution and incredibly fun to work with, offering up to 120fps editing. You get that premium, polished aesthetic that makes users stop scrolling and start downloading.

Instant AI Translation

Localization is a nightmare, but ButterKit makes it feel like magic. With advanced AI models, you can translate your app's metadata and even your screenshots into all 50 App Store Connect languages in seconds. Your designs stay perfectly synced across every language, so you never have to manually duplicate or adjust anything. It's the ultimate hack for reaching a global audience without the headache.

Seamless App Store Connect Upload

Why export, organize, and manually upload when you can do it all with one click? ButterKit integrates directly with the App Store Connect API to batch upload your polished screenshots and translated metadata. Everything is in the correct order and ready to go. This feature is a lifesaver for anyone who hates the bureaucratic nightmare of the App Store submission process.

Solo Indie Developers

You're a one-person army, and your time is precious. ButterKit automates the entire screenshot and metadata pipeline, from capturing designs in Xcode to publishing in 50 languages. No need to hire a designer or a localization specialist. Just focus on coding, and let ButterKit handle the rest, ensuring your app looks professional and reaches a global audience.

Design Studios and Agencies

Managing multiple clients means juggling dozens of app designs, languages, and App Store requirements. ButterKit's folder linking and batch processing capabilities make it a natural fit for your workflow. You can create stunning, branded templates once, then apply them across all your projects. The one-click upload to App Store Connect saves your team hours of manual labor every week.

Marketing and ASO Teams

You know that high-quality screenshots and localized metadata are the keys to better conversion rates. ButterKit gives you the tools to A/B test different 3D device angles, backgrounds, and text. With instant translation, you can launch your app in new markets without waiting for a translator. It's the secret weapon for any ASO specialist looking to dominate the App Store charts.

CI/CD and Fastlane Integration

For the tech-savvy developer who lives in the terminal, ButterKit is a dream. Link a folder of images generated by Fastlane or Xcode UI tests, and ButterKit automatically processes them into polished, framed screenshots. This makes it a seamless part of your automated build pipeline, ensuring that every release is accompanied by professional, up-to-date visuals without any manual intervention.

How does ButterKit capture screenshots from the Xcode Simulator?

ButterKit integrates natively with Xcode and the Simulator app. When you activate the capture tool, it automatically detects the active simulator window and takes a high-resolution screenshot of your app's current state. You can then instantly drag that image onto a 3D device frame, allowing for rapid iteration and design tweaks without any extra steps.

Can I use my own custom templates or only the ones provided?

You can absolutely use your own designs from scratch, or you can start with the high-quality templates bundled into the app. ButterKit also supports a growing community marketplace where you can download and share templates and add-ons. This gives you ultimate flexibility to match your brand's unique style.

Does ButterKit support all 50 App Store Connect languages?

Yes, it does. ButterKit uses advanced AI models to translate your app metadata and synchronize your designs across all 50 App Store Connect localizations. This means your screenshots and text will be perfectly aligned for every market, helping you reach a global audience without manual localization work.

Is ButterKit compatible with Fastlane and CI/CD pipelines?

Absolutely. ButterKit is designed to fit seamlessly into automated workflows. You can link an entire folder of images generated by Fastlane or Xcode UI tests. The app will then process all images, apply your chosen 3D device frames and designs, and prepare them for upload. This makes it a powerful tool for any CI/CD pipeline.