FrameFast vs AppMockUp: Which App Store Screenshot Tool Is Better?
AppMockUp is a popular device mockup generator that places screenshots inside realistic device frames. FrameFast goes further — adding captions, templates, AI-powered text, and one-click multi-size export specifically optimized for the App Store.
Feature Comparison
| Feature | FrameFast | AppMockUp |
|---|---|---|
| App Store–optimized sizes (6.9", 6.7", 6.5", iPad) | Partial | |
| Custom caption text overlay | ||
| Device frame mockups | ||
| Pre-built design templates | Limited | |
| Dual-device layout | ||
| Dark mode screenshots | ||
| Bulk export all sizes | ||
| Developer API | ||
| MCP integration for AI tools | ||
| No signup required | ||
| Edge rendering (instant) | ||
| AI caption localization |
Why Indie Developers Choose FrameFast
- 1Built for App Store compliance — all required sizes (6.9", 6.7", 6.5", iPad 13", iPad 12.9") with correct dimensions guaranteed.
- 2One-click bulk export across all sizes at once, so you never have to manually resize.
- 3No account needed — open the editor, upload your screenshot, and export in under a minute.
- 4Developer-first: full REST API and MCP integration so AI coding assistants can generate screenshots automatically.
- 5AI-powered caption localization into all 38 App Store languages from a single input.
When AppMockUp Might Be the Better Fit
- 1AppMockUp offers a wider range of device frame styles including older iPhone and Android models.
- 2AppMockUp supports social media mockup formats beyond the App Store.
Pricing Comparison
FrameFast
- FreeFree
- Pro (monthly)$9/mo
- Pro (annual)$79/yr
AppMockUp
- FreeFree (watermarked)
- Pro~$9.99/mo
Try FrameFast Free — No Signup Required
Upload your screenshot, pick a template, add captions, and export for all App Store sizes in under a minute.