App Store growth,

App screenshots and localization in minutes.

No accounts or subscriptions required. macOS 15.6+

ButterKit app showing App Store screenshot localization workflow

The developer-favorite, trusted by thousands.

Reach more users with polished App Store screenshots and metadata, localized to all 39 App Store languages - in minutes.

Capture screenshots

Drag and drop your app screenshots right onto 3D devices or capture directly from Xcode Simulator. Or link a folder of images (e.g. Fastlane). Either way, it just works.

Drag and drop images

Drag PNG or JPG screenshot images onto the 3D devices and voilà: ButterKit does the rest.

Capture Tool for Xcode Simulator

Unlike web tools, ButterKit integrates with Xcode and Simulator to capture directly, saving time and allowing rapid iteration to get the design you're looking for.

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Link a folder (e.g. fastlane)

Have an entire folder of images ready to go? Using Fastlane or Xcode UI tests to generate all screenshots with localizations? ButterKit easily handles it all.

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Design

Choose from professionally designed templates in one click, or create your own polished designs from scratch. ButterKit is a powerful 3D rendering engine, with high resolution 3D devices ready to use.

Real 3D devices

Place your screenshots in photorealistic devices to get those polished screenshots that sell. ButterKit 3D devices are easy (and fun) to adjust to get the look you're going for. And it's built on Metal, so edits are fast (up to 120fps).

Pro editing tools

Span 3D devices across multiple artboards and create seamless panoramic backgrounds to tie your artboards together. And of course, full font/gradient/background editing controls.

Templates

High quality templates are bundled into the app, and more can be easily added via access to a growing community marketplace of templates and add-ons.

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Translate and publish

Translate your screenshots and app metadata to all 39 App Store languages in seconds, then upload directly to App Store Connect with one click.

Instant translation

Translate to all 39 App Store Connect localizations in seconds. Designs stay synced across languages.

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Upload to App Store Connect

Batch export images or upload your designs directly to App Store Connect - ready to go, in the correct order.

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App Store preview

See how your app's story will look on every device and in every language before you publish.

Trusted by thousands

Indie developers, design studios, and marketing agencies worldwide rely on ButterKit to reach more users.

More Reviews →

"ButterKit is the best software purchase I made this year."

- Franklin B, founder at EchoKeep

"ButterKit is, by far, the best app for this. It has sped up my workflow 100x"

- Paul Boyce, developer at Sono+

"ButterKit is a truly excellent product."

- Antonio Ferraioli, founder at Onmadesoft

"ButterKit is the first app I've seen that can generate really good results with relatively little effort. It was an insta-buy."

- Mark Smith, developer at Mosey Parker

"ButterKit is amazing. Instant buy! I love the simplicity and UX and glass design."

- Tom, founder at Headshot Migraine App

"ButterKit is the best software purchase I made this year."

- Franklin B, founder at EchoKeep

"ButterKit is, by far, the best app for this. It has sped up my workflow 100x"

- Paul Boyce, developer at Sono+

"ButterKit is a truly excellent product."

- Antonio Ferraioli, founder at Onmadesoft

"ButterKit is the first app I've seen that can generate really good results with relatively little effort. It was an insta-buy."

- Mark Smith, developer at Mosey Parker

"ButterKit is amazing. Instant buy! I love the simplicity and UX and glass design."

- Tom, founder at Headshot Migraine App

"I don't normally buy software but ButterKit was an instant purchase. I've tried so many screenshot tools and they were all too complex. I understood how to use ButterKit in just 10 seconds."

- Franklin Byaruhanga, founder at EchoKeep

"Awesome stuff! ButterKit's translation and capturing directly from the simulator are awesome features! No brainer!"

- Daniel, founder at Snap to Learn

"So valuable. This will totally replace Framous. Ability to use markdown is an amazing feature, and translations available right within the app, OMG!"

- @indyfromoz, Developer

"Just picked up ButterKit! This is exactly what I was looking for to release my app."

- Daniel, Founder of Noshby

"ButterKit has completely transformed how I create app store screenshots."

- Sarah Chen, indie developer

"I don't normally buy software but ButterKit was an instant purchase. I've tried so many screenshot tools and they were all too complex. I understood how to use ButterKit in just 10 seconds."

- Franklin Byaruhanga, founder at EchoKeep

"Awesome stuff! ButterKit's translation and capturing directly from the simulator are awesome features! No brainer!"

- Daniel, founder at Snap to Learn

"So valuable. This will totally replace Framous. Ability to use markdown is an amazing feature, and translations available right within the app, OMG!"

- @indyfromoz, Developer

"Just picked up ButterKit! This is exactly what I was looking for to release my app."

- Daniel, Founder of Noshby

"ButterKit has completely transformed how I create app store screenshots."

- Sarah Chen, indie developer

Recent screenshots made with ButterKit

What's so different, anyway?

See how ButterKit stacks up against legacy design tools or AI generators

Legacy design tools

AI image generators

ButterKit

Beautiful designs in seconds

Sometimes

No accounts, signups, or ads

Auto-translate to all 39 App Store languages

Real, editable 3D device mockups

Capture screenshots from Xcode

Upload to App Store Connect

Retain full design control

Automation (e.g. Fastlane)

Frequently asked questions

Have a different question and can't find the answer you're looking for? Post it in the Discord chat or the r/ButterKit subreddit

No subscriptions?! How?

I don’t like subscriptions either. ButterKit runs on your machine - no servers or storage - so costs stay low. That makes sustainable one-time pricing possible. For those who want to support ongoing development, an optional annual plan is available (thank you!). The one-time option isn’t going away, but the price may increase as more features and value are added.

What does Pro unlock?

ButterKit Pro removes the “Made with ButterKit” watermark and unlocks cloud API features (OpenAI, Gemini, Claude, and more). Cloud usage is optional and billed separately by each provider.

System requirements?

ButterKit requires macOS 15.6+ and works best with Apple Silicon M1 or newer. Intel works too.

What platforms can ButterKit design for?

ButterKit is opinionated and designed from the ground-up to work best for Apple platforms: iOS, iPadOS, macOS, watchOS, and visionOS.

How does translation work? Do I need an API key?

ButterKit includes two translation engines:

On-device (free): 18 languages, fast, offline, and fully private. No servers or API keys.

Cloud (Pro): All 39 App Store languages with customizable creativity. Optional, bring-your-own-key billed separately by the provider you choose.

Any discounts for educators, students, veterans, first-responders?

Yes, very happy to extend a 50% discount to teachers, active students, military veterans and first-responders! Please send an email from your .edu or government email address to [email protected] to receive a discount code.

Built by a UX Engineer

I'm a dad, backpacker, developer, 3D geek and UX engineer. ButterKit started as a simple utility to make app marketing smoother. Today, it's become an exciting community and tool used by developers, designers, and agencies around the world.

We're a growing team on a mission to make app publishing as smooth as butter. We develop in public; join us on Discord or the r/ButterKit subreddit to help shape the next release. I hope to see you there!

- Zach

Smoother publishing.

Automate screenshots, metadata, and localization locally on your Mac.

Download for macOS