App Store screenshots, composed on your Mac.

Drag raw captures in. Style them into store-ready panels. Span one shot across two slots as a tilted panorama — with the App Store gutter previewed, so you judge the seam the way buyers will see it. Or go fully hands-off and let an AI agent drive the whole thing over MCP.

See how exports work Coming to the Mac App Store — in TestFlight now.
1320 × 2868 exact, zero tolerance RGB · no alpha channel 01.png … 10.png gallery order .screenker documents · undo everywhere

Drive it hands-off, over MCP.

Screenker is the first screenshot studio you can run by conversation. Every feature is scriptable over a local, off-by-default MCP server — so an agent can build panoramas, restyle a gallery, critique it, and publish to App Store Connect while you stay hands-off. Works with Claude Code, OpenAI's Codex, and any MCP client.

Claude Code OpenAI Codex localhost · off by default bearer-token
you ▸ build a 3-slot tilt panorama from these
      shots, Bold preset, then critique and ship it

agent ▸ composed 10 slides · scored 9.1/10 ·
      published 10 screenshots to App Store Connect

The tilt panorama

One screenshot, two or three store slots, one tilted device across the seam. Drag the device on the canvas, scrub the angle, and let seam-gap compensation keep edges aligned across the gutter when the slices are cut.

Presets that ship untouched

Minimal, Dark, Bold, Playful — each one shippable as-is, every knob editable after: gradients, any installed font, caption position, per-panel overrides.

A bezel with no license strings

The device frame is drawn, not licensed — continuous corners, Dynamic Island, side buttons — and parametric to any export size, iPhone or iPad. Or go bare with a corner-radius slider.

Captions from the screenshot itself

Suggest Captions returns 3–5 headlines in your preset's voice, read from the screenshot itself. Bring your own Claude or OpenAI key in ⌘, Settings; keys stay in your Keychain — never in your project files.

Two titles, one per screen

Give a two-screen panorama a separate title on each half, so the store gutter falls cleanly between them and never splits a word.

Bands, plates & photo backdrops

Filled caption bands for legibility, shadowed media plates that float bare media, and full-bleed photo backgrounds with a focal-point safe-area guard so the subject never crops.

Magnifier loupes

Spotlight the detail that sells — a live crop of the slide's own screenshot, with chrome, a leader line, and optional depth-of-field so the lens pops.

Straight to App Store Connect

Import your current set and publish the finished gallery back with your own ASC key. Keep a working set bigger than the 10-shot limit and pick which slides ship.

Exports that never bounce.

Export All renders every panel for each store size you check — one folder per size, numbered in gallery order, panoramas producing consecutive slices. Every PNG is exactly the preset's dimensions, RGB, no alpha. It's the format App Store Connect requires, so uploads pass the first time.

exports/
├── iphone-6.9/          1320 × 2868
│   ├── 01.png           panorama · slot 1
│   ├── 02.png           panorama · slot 2
│   └── 03.png
└── ipad-13/             2064 × 2752
    ├── 01.png
    ├── 02.png
    └── 03.png

A real Mac app. No template mill, no subscription.

Documents, menus, shortcuts, an inspector on the right — and screenshots that pass review.