AppStills.Reasons to consider AppStills — and reasons to stay
Where AppStills is stronger
- Genuine real-time 3D editor (react-three-fiber): full 6-axis per-object transforms (posX/Y/Z + rotX/Y/Z) plus scale, a perspective OR orthographic camera, and four render styles (realistic/clay/toon/linear) — versus AppMockUp's flat 2D device frames.
- AI at import: pulls an existing App Store / Google Play listing (name, screenshots, description) with Claude-vision colours + layout, and auto-generates a headline + optional subtitle per screen from the app's own store text — AppMockUp has neither listing import nor any AI.
- App Preview .mp4 video export: Apple-compliant H.264 (yuv420p, 30fps CFR) with a silent stereo AAC track, encoded in-browser for iPhone and iPad — AppMockUp is still-images only.
- Localization depth: exactly 50 App Store Connect locales with AI batch translation of the whole caption set, plus per-language screenshot swaps and position nudges — beyond AppMockUp's manual, translate-it-yourself localization.
- Multi-size, multi-language one-ZIP export that is pixel-exact and flattened alpha-free, with per-language and per-size folders — versus AppMockUp's 'Automatically generates appropriate sizes' with no stated single-ZIP bundle.
- Richer scene toolkit: directional soft fades & grainy dither dissolve, glass-floor reflection, background vignette & blur, gradient-capable borders, panorama backgrounds spanning frames, a built-in mesh-gradient background generator, plus rating/testimonial and award-badge objects, share links, and public showcases.
Where AppMockUp Studio is stronger
- Completely free with zero friction — 'No account or registration is required,' no sign-up, and no install; AppStills redirects you to sign in before the editor loads at all.
- No paid tier to work around: every feature AppMockUp offers is available at $0, whereas AppStills gates batch ZIP, app-preview video, custom canvas, and AI translation behind Pro ($5.90/month).
- Established template library ('a template for every type of app') and a cited track record — '7+ Million screenshots generated' and '400+ Reviews.'
- Broad manual localization at no cost: 'all languages and scripts' with 'full support for right-to-left languages and special characters.'
Verified 2026-07-21. AppMockUp Studio details are from app-mockup.com and can change — check their site for current pricing. For a full feature-by-feature table, see the AppStills vs AppMockUp Studio comparison.
When to stick with AppMockUp Studio
Choose AppMockUp Studio if you want a genuinely free, no-account, no-install tool for straightforward 2D screenshot layouts and would rather not sign in or pay a subscription. It is the better pick when you only need a handful of flat, templated screenshots, when you want to test a tool with zero commitment, or when your must-haves (3D perspective posing, AI store-import and captions, app-preview video, automated caption translation, batch multi-size export) are all things you can do without — its free-forever model and broad template library then win outright. If you do need those advanced or AI-driven capabilities, or multi-size/multi-language output, AppStills' Pro tier is what covers them.
Bottom line
Both are browser-based screenshot tools, but they serve different needs. AppMockUp Studio wins on cost and friction: it is fully free, needs no account or install, and ships a large template library with solid free background and localization tooling — ideal for simple, flat 2D screenshot sets. AppStills wins on capability: a real-time 3D editor, AI listing-import with auto-captions, Apple-compliant .mp4 app-preview video, 50-language AI translation, and pixel-exact multi-size/multi-language ZIP export — but its batch, video, and translation features require a $5.90/month Pro plan and a sign-in. Pick AppMockUp for free, no-commitment simplicity; pick AppStills when 3D, AI, video, or pixel-exact multi-store output justify a subscription.