App Store screenshots from your checks

mobster asc screenshots makes your App Store screenshots from the checks you already have. Each check opens a screen the way your users reach it, by deep link or by its steps. Mobster runs it on a simulator of each App Store display size, in each language your app ships, with the status bar at 9:41, full battery and full bars. Then it saves that screen as a full-resolution PNG. Nothing is uploaded. The folder is yours to review, then fastlane deliver or App Store Connect takes it.

Make them

Tag the checks that end on a screen you want in the store with screenshot, then from your project’s folder:

mobster asc screenshots --size 6.9 --locale en-US --locale de-DE

2 screenshots: 1 screen × 6.9" × en-US, de-DE
[1/2] Home greets a returning user: iPhone 17 Pro Max, en-US
[2/2] Home greets a returning user: iPhone 17 Pro Max, de-DE
✓ en-US/01_69_home-greets-a-returning-user.png  1320×2868  (passed)
✓ de-DE/01_69_home-greets-a-returning-user.png  1320×2868  (passed)

Screenshots in fastlane/screenshots, listed in screenshots.json. Review them, then upload with `fastlane deliver` or in App Store Connect. Mobster uploads nothing.

That run took 1 min 55 s on an M5 Max under heavy load (14 Oct 2026), most of it creating and booting the iPhone 17 Pro Max simulator the first time.

Flag	Default
`PATH`	The checks tagged `screenshot`, else every check in `.mobster/checks`. Each check is one screenshot, numbered in order.
`--size`	`6.9`, plus `13` when the app runs on iPad (`UIDeviceFamily`). Also `6.5` and `6.3`. Repeatable.
`--locale`	Every language the built app has (its `.lproj` folders), as App Store locales: `en` is `en-US`, `de` is `de-DE`. Repeatable.
`-o DIR`	`fastlane/screenshots`, in `<locale>/<NN>_<size>_<check>.png`, the layout `fastlane deliver` reads.

How each one is made

The language. The app launches with -AppleLanguages (de-DE) -AppleLocale de_DE. iOS stays in its own language. Your app shows the one you asked for.
The size. Each size runs on the newest simulator of it this Mac has: iPhone 17 Pro Max or 16 Pro Max for 6.9”, iPad Pro 13-inch for 13”. Each PNG’s pixel size is checked against App Store Connect’s sizes: 1320 × 2868 for 6.9”, 2064 × 2752 for 13”.
The status bar. xcrun simctl status_bar … override sets 9:41, Wi-Fi, full bars and a charged battery for the run, and clears it after.
The verdict. The check’s expectations are still checked. A shot whose run couldn’t run is left out. screenshots.json lists every shot with its verdict, so a German screen that fails an English expectation shows up there.

Checks that open their screen by deep link (launch.url) need no model and suit every language. A check with steps replays its recorded steps, which find controls by their labels. In another language those labels differ, so Smart heals the step on your key.

Run checks

Automate

Your stack

App Store

Reference

App Store screenshots from your checks

Make them

How each one is made

​Make them

​How each one is made

Make them

How each one is made