Poly Duo (C1M)
Is the homework answer right? Ask two AIs in one tap
When your child asks AI for help, Duo shows where two AIs agree and where to double-check. 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
“Is 0.999… equal to 1?”
Both agree
Yes, mathematically equal.
Where they differ
How to explain it to a 12-year-old.
Check yourself
The textbook chapter on decimals.
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
Everyone · Teachers · Students · 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