Redesign any iPhone app for both screens of a foldable with a skill
A designer built a coding-agent skill that redesigns an app for the new foldable iPhone Duo instead of letting it stretch: it lays out the folded and unfolded screens separately and creates the UI for each.
Source
@tobiadonadon_ on X · 2026-10-19
Written in our own words. Credit to the original author. Link checked 2026-10-22.
What they did
A designer built a coding-agent skill that redesigns an app for the new foldable iPhone Duo instead of letting it stretch: it lays out the folded and unfolded screens separately and creates the UI for each.
Result (as claimed)
The post drew 384 likes from app builders preparing for the bigger screen.
Tools they used
Cost: Claude Code: from $17/mo.
Set it up
Write a one-page brief
Describe the app in plain words: who it is for, the 3 core screens or actions, and what "done" looks like.
Start the project with your agent
Open Claude Code and paste the brief. Ask it to propose a stack and a file plan before writing code.
Build one slice at a time
Ship the smallest working flow first, run it, then add features one by one. Commit after each working step.
Test it like a user
Click through on desktop and phone. Ask the agent to add basic tests and fix anything that breaks.
Check security and ship
Keep keys in environment variables, check auth and database rules, then deploy and share the link.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Redesign any iPhone app for both screens of a foldable with a skill What the original author did: A designer built a coding-agent skill that redesigns an app for the new foldable iPhone Duo instead of letting it stretch: it lays out the folded and unfolded screens separately and creates the UI for each. Reported result (as claimed by the author): The post drew 384 likes from app builders preparing for the bigger screen. Source: https://x.com/tobiadonadon_/status/2112305196001018212 Tools they used: Claude Code, iPhone Category: Vibe coding & apps Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Redesign any iPhone app for both screens of a foldable with a skill What the original author did: A designer built a coding-agent skill that redesigns an app for the new foldable iPhone Duo instead of letting it stretch: it lays out the folded and unfolded screens separately and creates the UI for each. Reported result (as claimed by the author): The post drew 384 likes from app builders preparing for the bigger screen. Source: https://x.com/tobiadonadon_/status/2112305196001018212 Tools they used: Claude Code, iPhone Category: Vibe coding & apps Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Redesign any iPhone app for both screens of a foldable with a skill What the original author did: A designer built a coding-agent skill that redesigns an app for the new foldable iPhone Duo instead of letting it stretch: it lays out the folded and unfolded screens separately and creates the UI for each. Reported result (as claimed by the author): The post drew 384 likes from app builders preparing for the bigger screen. Source: https://x.com/tobiadonadon_/status/2112305196001018212 Tools they used: Claude Code, iPhone Category: Vibe coding & apps Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to build an iPhone or Android app with AI · How to use Claude Code skills and plugins · How to control coding agents from your phone · How to vibe code an app with Claude Code
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