Screenker turns raw screenshots into store-ready App Store panels — on your Mac, in a real Mac app. Drag captures in, style them, and export pixel-exact PNGs that App Store Connect accepts the first time, every time.
And it's the first screenshot studio you can drive entirely hands‑off. Screenker speaks MCP, so an AI agent — Claude Code, OpenAI's Codex, or any MCP client — can compose panoramas, restyle a gallery, critique it, and publish straight to App Store Connect for you. Every feature in the app is scriptable over a local, off‑by‑default automation server. Work by hand, go fully hands‑off, or mix both.
The Tilt Panorama
The marquee move: span one screenshot across two or three store slots as a tilted device on a continuous background. Screenker previews the App Store gutter between slots, so you judge the seam exactly as buyers will see it — and seam-gap compensation keeps edges aligned when the slices are cut. Give the pair two separate titles, one per screen, so the gutter never splits a word.
Captions That Carry
Bold headlines with optional filled color bands behind them, subtitles at the opposite edge, any installed font, per-panel color. Legible at thumbnail size, where it counts.
Frame It, Plate It, Or Let It Bleed
A programmatic device bezel — continuous corners, Dynamic Island, side buttons — parametric to any export size, iPhone or iPad. Or go bare with a corner-radius slider, float media on a shadowed plate, or drop a full-bleed photo background with a focal point that never crops the subject.
Spotlight The Detail
Drop a magnifier loupe on any region — a live crop of the slide's own screenshot, with chrome, a leader line, and optional depth-of-field so the detail pops.
Styles That Ship Untouched
Four presets — Minimal, Dark, Bold, Playful — each shippable as-is, every knob editable after: solid or gradient backgrounds, caption size and position, per-panel overrides. Save your own look as a reusable template.
Hold More, Ship The Best
Keep a working set larger than the store's 10-screenshot limit and choose which slides ship. Excluded slides stay in the document for editing; export and publish use only the ones you pick.
See It As Buyers Do
Preview the whole gallery as the App Store product page — the slot carousel with real gutters — before you ship a pixel.
Ai Captions, Your Choice Of Brain
Suggest Captions reads the screenshot itself and returns headlines in your preset's voice. Bring your own Anthropic (Claude) or OpenAI key — entered in Settings, stored in your Keychain, never in your project files.
Straight To App Store Connect
Import your current screenshots from App Store Connect and publish the finished gallery back, in order, with your own ASC API key. No manual upload dance.
Exports That Never Bounce
Every PNG is exact preset dimensions with zero tolerance, RGB, no alpha — the format App Store Connect actually requires. Export one panel or Export All: every store size you check, each in its own subfolder, numbered in gallery order. Both master sizes (iPhone 6.9″, iPad 13″), the Mac size (2880×1800), and the legacy shelves are built in.
Go Hands-Off
An optional local automation server (off by default, localhost only) lets any MCP client — Claude Code, OpenAI's Codex, whatever you use — drive Screenker end to end: build, restyle, critique, and publish a gallery entirely by conversation, while you stay hands-off.
A Real Mac App
Documents, undo everywhere, drag-and-drop, keyboard shortcuts, an inspector on the right. No web mill, no subscription, no template soup. No account, no analytics.
Support
Questions, bugs, or feature requests for Screenker: email billdonner@gmail.com. It reaches the person who wrote the app.
Status and copy on this page come straight from App Store Connect (2026-08-06).