Poly Duo (C1M)
Not sure ChatGPT is right? Get a second opinion in one tap
ChatGPT answers, Claude checks. You get one answer that shows where they agree, where they differ and what to check yourself. Free.
Get Duo — freeiPhone Get Duo — freeAndroid
On iPhone? Get the Duo shortcutOn Android? Get Duo on Google Play
iPhone · iOS 18+ · ChatGPT and Claude apps, free accounts are enough · Android: Google Play
One answer in three blocks
“Take a job offer: +20% pay, but a 90-minute commute each way?”
Both agree
The role is a career step up.
Where they differ
ChatGPT leans yes; Claude adds the per-hour math, the raise may vanish.
Check yourself
Drive the route at rush hour, ask for 2 remote days.
When it pays off
- A contract or lease
- A money or health question
- Your child’s homework
- An email you can’t take back
- A big purchase
Three steps
- Tap the buttonIt opens the right download for your phone.
- Add itiPhone: tap Add, then tap the Duo tile — it starts. iPhone asks permission about 5 times: tap “Always Allow” each time, right away. Android: install the Poly app, Duo is inside.
- Ask your questionChatGPT answers, Claude checks, and you get the three blocks above. About a minute.
In the Poly app: Duo and even stronger things
Everything on this page, plus much more, especially if you have a laptop
AndroidGoogle PlayiPhone · soonApp Store
Teachers · Students · Parents · Lawyers · Journalists · Librarians · Health · Small business
Won’t open on iPhone? Download the file
The file goes to Files → Downloads — open it there and tap Add
Open source: Code on GitHub