Shotlingo

Shotlingo is a screenshot editor for mobile app listings that runs in the browser with no account. You drop in raw screenshots from the simulator, choose a device frame such as a plain iPhone, a tilted 3D render or a photo of someone holding the phone, and the screenshot is fitted to the frame automatically. The library has hundreds of device mockup variants across dozens of device families, all available on the free plan.

You write headlines and captions once, then add the languages you ship. Each text object gets its own row where a translation can be filled in and edited by hand, and the layout is re-typeset per language instead of just swapped, which matters because text length changes a lot between languages. The site includes a text expansion calculator to check this, and files are exported at the precise pixel dimensions that App Store Connect and Google Play ask for.

The free plan allows designing, translating and exporting one full set per day with no account or card, which is enough to try it on a real release. Unlimited exports start at $9 per month, backed by a 30-day refund, and plan details are on the pricing page.