ButterKit

Name: ButterKit
Brand: ButterKit

Automates App Store screenshot design, localization, and publishing for iOS developers.

softwareAutomation Toolsapp-store-screenshotsios-developer-toolslocalization

What is ButterKit?

ButterKit is a workflow automation tool for iOS developers who need to produce and publish App Store assets across many languages and storefronts. It captures screenshots directly from the Xcode Simulator, drops them into photorealistic 3D device frames, and translates copy into all 50 App Store Connect languages, either using frontier AI models or 18 languages for free using on-device Apple Silicon models. It integrates with Fastlane and CI/CD pipelines for automated capture and can upload the finished assets straight to App Store Connect, handling multi-storefront publishing without manually juggling dozens of screenshot sets. It is used by thousands of Apple developers to cut down the repetitive design and localization work that comes with every app release.

SpecificationsAI-estimated

deploymentDesktop App

open source❌ No

api available❌ No

support optionsEmail support, Discord (Supporter tier), documentation

key integrationsXcode Simulator, Fastlane, App Store Connect, CI/CD pipelines

Key Features of ButterKit

Captures screenshots directly from the Xcode Simulator into photorealistic 3D device frames.

Translates App Store copy into all 50 App Store Connect languages using frontier AI models or on-device models.

Offers 18 languages translated for free using on-device Apple Silicon processing.

Integrates with Fastlane and CI/CD pipelines for automated, repeatable screenshot generation.

Uploads finished assets directly to App Store Connect across multiple storefronts.

Supports drag-and-drop screenshot design without requiring separate design software.

Includes premium templates and add-ons available even on the free tier.

Use Cases for ButterKit

Multi-language App Store launches

Solo iOS developers can generate and publish localized screenshots across dozens of storefronts without hiring a translator or designer.

CI-driven release pipelines

Teams can wire ButterKit into Fastlane so fresh screenshots are generated automatically on every release build.

Pros & Cons of ButterKit

Pros

Generous free tier includes all 50 languages and App Store Connect upload
One-time Pro purchase available instead of forcing a subscription
Direct Fastlane and CI/CD integration fits existing developer workflows
On-device translation for 18 languages avoids extra API costs

Cons

Free tier exports are watermarked, limiting production use without upgrading
Full 50-language translation via frontier AI models may incur additional costs
Built specifically for Apple's App Store, with no mention of Google Play support

Frequently Asked Questions

Do I need design skills to use ButterKit?

No, screenshots are captured from the Xcode Simulator and placed into templates via drag and drop.

Is translation free?

18 languages are translated for free using on-device Apple Silicon models; the remaining languages use frontier AI models which may have associated costs.

Can ButterKit upload directly to the App Store?

Yes, it can manage App Store Connect uploads directly for multi-storefront publishing.

Pricing Overview

View full pricing →

Freemium

Free

Pro

Supporter

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