AppMockUp Alternative: Boom Screens vs AppMockUp Studio
AppMockUp Studio is one of the most popular free screenshot tools, with 7M+ screenshots generated and no account required. Here is how it compares to Boom Screens — especially on the localization features most developers eventually need.
Boom Screens is the best AppMockUp alternative for developers who need multi-language screenshots: unlike AppMockUp Studio, Boom Screens AI-localizes all text layers into 80+ languages in one click and exports a native-resolution ZIP folder per language, ready to upload to App Store Connect.
AppMockUp Studio has earned its reputation. Seven million screenshots generated, no account required, and a clean editor that works well for English-only launches. If localization is never on your roadmap, it is a capable free tool. Here is an honest look at where it excels, where it does not, and when Boom Screens is the better choice.
What AppMockUp Studio does well
- No account required — start designing immediately, no email or credit card. This removes the biggest friction point for developers evaluating screenshot tools.
- 7M+ screenshots generated — a proven, stable product with a large user base and 400+ reviews.
- Clean device frame library — a wide selection of iPhone, Android, iPad, and desktop frames, updated regularly for new device releases.
- Backgrounds and gradients — AppMockUp has a well-regarded collection of gradient and solid-color backgrounds that consistently convert well in ASO tests.
- Free, no limits — the core tool is genuinely free with no hidden limits on exports.
Where AppMockUp falls short
AppMockUp is purpose-built for designing screenshots — it is not built for localizing them. If you ship to any non-English App Store market, every additional language requires you to manually duplicate the design, manually enter translated text, and manually export each language-and-device combination. There is no automation layer.
- No localization of any kind — AppMockUp has no translation feature, no AI, and no mechanism for producing multi-language exports.
- No AI assistance — text and layout are fully manual. There is no AI to suggest copy, translate captions, or resize text when a translation runs long.
- No multi-language ZIP export — the output is individual files per design, not a folder-per-language bundle ready for App Store Connect.
- No RTL or CJK handling — Arabic/Hebrew right-to-left layouts and Japanese/Korean/Chinese font rendering require workarounds that AppMockUp does not provide.
The localization math
For 5 screenshots × 10 languages × 3 device sizes in AppMockUp: 150 manual designs, 150 manual text entries, 150 individual exports. In Boom Screens: 5 designs, one localization click, one ZIP containing all 150 outputs.
Boom Screens vs AppMockUp Studio: head-to-head
- AI screenshot localization: Boom Screens ✓ | AppMockUp ✗
- 80+ languages supported: Boom Screens ✓ | AppMockUp ✗
- Automatic RTL layout (Arabic/Hebrew): Boom Screens ✓ | AppMockUp ✗
- CJK font support (Japanese/Korean/Chinese): Boom Screens ✓ | AppMockUp ✗
- Multi-language ZIP export: Boom Screens ✓ | AppMockUp ✗
- Device frame library: Both ✓ (AppMockUp has a larger collection)
- No account required to start: AppMockUp ✓ | Boom Screens free plan (account required)
- Free to use: Both ✓ (Boom Screens free = English-only export)
Pricing comparison
AppMockUp Studio is free with no stated paid tiers for the core screenshot tool.
Boom Screens: Free (1 project, English export only) · Starter $25/month (5 projects, up to 3 locales) · Pro $49/month (unlimited projects, all 80+ languages).
Which tool to choose
Choose AppMockUp if: you are launching in English only and want a free, no-account-required tool with a wide device frame library. For a fast English-language screenshot set, AppMockUp is hard to beat.
Choose Boom Screens if: you ship to any non-English market, or plan to expand internationally. AppMockUp provides no path to localization — meaning every new language is a full manual redesign effort. Boom Screens is designed specifically for the design-once, localize-everywhere workflow: one English design becomes 80+ language exports in minutes.
Try Boom Screens free
Boom Screens is free to start — no credit card required. Design your screenshots, AI-localize into 80+ languages, and export a native-resolution ZIP for every App Store device size. Read the full comparison.