StoreCanvas — App Store screenshots & copy

Overview

StoreCanvas is a Mac app that builds your entire App Store listing in one place: device-framed screenshots for iPhone, iPad, and Mac at the exact pixel sizes Apple requires, a copy center with live character counters for every App Store Connect field, an app icon generator that exports the full icon set, and a listing preview that shows the whole thing the way shoppers will see it. Bring your own AI key and it writes the copy and generates images too.

Features

Exact App Store sizesEvery export matches Apple's required pixels — no "wrong dimensions" rejections.

iPhone, iPad & Mac setsBuild one, two, or all three platforms per project, each an independent set.

Headlines & subheadlinesTwo lines of marketing copy per screen, with fully independent typography — pair a heavy display headline with a light supporting line.

Your fontsAdd any .ttf, .otf, or .ttc — Google Fonts included — and reuse it across every project.

Style the whole set at onceSync text, background, or device styling across every frame and platform in one click.

Copy centerEvery App Store Connect field with live counters that warn before you hit the limit — and hard-stop at it.

App icon generatorDesign once, export the complete iOS + macOS AppIcon.appiconset + App Store 1024.

Bring-your-own-key AIClaude, ChatGPT, or Gemini write your copy and generate images. Your key, your costs, your privacy.

AI LibraryEvery image you generate is saved automatically — reuse it on any screen, platform, or project. Generate once, use forever.

App Store PreviewSee your full listing mocked up per device, and export it as a shareable image — free, no unlock needed.

Projects & versionsArchive a version before starting the next; exports auto-organize into version folders.

One-time purchaseDesign everything free; pay once to export. Never a subscription.

Guides

The short version of each task — the help center has the full walkthroughs.

Start a project

Open StoreCanvas — you land on the project board.
Click New Project, name it after your app.
Everything autosaves; click ‹ Projects anytime to return to the board.

Full walkthrough →

Design your app icon

Open the Icon tab.
Pick Monogram (type a letter, choose colors) or Image (import art, or generate it with AI).
Set the background — solid or gradient.
Export Icon Set gives you a drop-in AppIcon.appiconset plus the App Store 1024 PNG.

Full walkthrough →

Build your screenshots

Open the Screens tab and pick the platform: iPhone · iPad · Mac.
Click Add Screen.
Drop your raw screenshot into the phone (or Mac window). Frame it with the Image Zoom / Position sliders.
Write a headline and optional subheadline, each with its own font, weight, size, spacing, and tracking. Add your own fonts with Add Font….
Set the background: solid, gradient, or a full-frame image.
Use the Sync … To All Frames buttons to carry one look across the whole set.

💡 Where do raw screenshots come from? iPhone/iPad: run your app in the Xcode Simulator and press ⌘S. Mac: ⌘⇧4 then Space, then click the window.

Full walkthrough →

Write your App Store copy

Open the Text tab. Fill Listing Details first (developer, category, age, version).
Write a Project Brief in the right panel — what your app does, in a few sentences.
Click Generate All Copy to fill every field from the brief, or use the ✨ on any single field.
Counters go amber near the limit and red at it — fields stop at Apple's exact maximums.

Full walkthrough →

Preview your listing & ship updates

The Preview tab mocks your listing per device and exports it as a PNG. When you ship a new version, Archive This Version freezes a copy on your board, and re-exports land in a fresh version folder automatically. Full walkthrough →

AI Setup

StoreCanvas is bring-your-own-key: you paste an API key from the provider of your choice, it's stored only on your Mac, and StoreCanvas calls the provider directly. We never see or proxy your key, your prompts, or your tokens.

Provider	Best at	Get a key
Anthropic (Claude)	The strongest App Store copywriting — titles, descriptions, keywords with real nuance	console.anthropic.com
Google (Gemini)	Images + text, with a generous free tier — the easiest way to start	aistudio.google.com
OpenAI (ChatGPT)	Solid all-rounder for text and images	platform.openai.com

💡 A good combo: Claude for copy, Gemini for images. You pay the provider directly at API rates — typically pennies per generation. No markup, no middleman.

FAQ

Is this a subscription?

No. StoreCanvas is a one-time purchase — $29.99, yours forever, every update included. You can design everything free and pay only when you're ready to export.

Do I need an AI key to use StoreCanvas?

No. Screenshots, icon, copy editing, and preview all work without AI. The key only powers ✨ generation.

Where are my API key and projects stored?

On your Mac. Keys live in the app's local settings and calls go straight to your provider. Projects are files in your Application Support folder.

What sizes does it export?

The current App Store Connect requirements — iPhone 1320×2868 (and other accepted sizes), iPad 2064×2752, Mac 2880×1800, plus every icon size for iOS and macOS.

Can I use it for more than one app?

Yes — unlimited projects, no per-app fees.

Can I use my own fonts?

Yes. Add Font… accepts any .ttf, .otf, or .ttc file — Google Fonts included. Imported fonts are copied into StoreCanvas and stay available across every project.

Do I pay again every time I generate an image?

You pay your AI provider directly at their rates, but every image you generate is saved to your AI Library automatically — so you can reuse it on any screen, platform, or project without generating it again.

What exactly is behind the paywall?

Only exporting your finished assets. Designing screens, writing copy, generating with AI, and previewing your listing are all free and unlimited — and exporting the listing preview stays free too, so you can always share a mock for feedback.

Refunds?

Purchases are handled by Apple — request a refund at reportaproblem.apple.com.

Read the full how-to guide → · Privacy policy · Support