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Duo

An iPhone Duo simulator you can build apps for

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Inspired by Apple's iPhone Duo, Duo is a desktop simulator for exploring a phone that folds. Fold it, rotate it, and build apps for its inner and cover displays with a fold-aware SDK, React UI kit, and App Store. Try the browser preview for a taste of the experience.

PH · launched Sep 18, 2026 · 1 upvote (top 69%) · 0 views

Niche: ios app development and analysis tools · 72 launches, 4 in the last 7 days ▼ -56% · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Developer
  • Not AI
  • Commercial product
  • Design Tools
  • Developer Tools
  • GitHub
  • OpenAI Day

Visit website ↗ Source listing ↗

More like this: all 72 launches in ios app development and analysis tools →

Could you build this?

Partial Building a basic 3D folding phone viewer with React is feasible, but crafting a full developer desktop simulator, dual-screen fold-aware SDK, and app execution runtime requires deeper OS/system virtualization tooling.

What it would actually take: Requires an Electron or Tauri desktop wrapper hosting dual webview/iframe runtimes synchronized via an IPC bridge. The hard part is building an accurate simulation environment that handles dual-screen layout shifts, posture events (angle changes), and a reliable sandboxed SDK runtime for arbitrary third-party apps.

Competitors

Other products that read as similar to this one : 277 launches clear the similarity bar, closest 8 shown.

Attention rank: #246 of 278 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 173 days after the earliest competitor.

  • iphone-duo-skills · github · 2026-09-09 · 22 upvotes · similarity 0.69
  • Duo Gallery · ph · 2026-11-02 · 3 upvotes · similarity 0.68
  • iphone-duo · github · 2026-09-09 · 16 upvotes · similarity 0.67
  • iphone-duo · github · 2026-09-10 · 122 upvotes · similarity 0.66
  • DuoDiscover · ph · 2026-10-23 · 1 upvotes · similarity 0.65
  • iPhone-Duo-App-Patcher · github · 2026-09-18 · 19 upvotes · similarity 0.60
  • DuoFold-Android · github · 2026-09-12 · 137 upvotes · similarity 0.60
  • iphone-duo-skill · github · 2026-09-20 · 11 upvotes · similarity 0.60

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.