Is This BS?
Built with Professor Dave ExplainsThink before
you believe it.
Paste any claim and let AI tear it apart. Get a verdict, spot the logical fallacies, and see the real science, powered by the internet's most relentless debunker.
How it works
Three taps from suspicious to certain.
No account to set up, no feed to scroll. Just the fastest way to find out whether something is actually true.
Paste any claim
Something you saw online, heard from a friend, or read in the news. Drop it in exactly as you found it.
AI breaks it down
Get a clear verdict, a confidence score, the exact parts that are true or false, and the logical fallacies at play.
Sharpen your instinct
Take Professor Dave's Daily Challenge, build a streak, and learn to spot the pattern before you ever open the app.
The verdict
Not just true or false.
Real claims are messier than that. Every analysis names exactly what's solid, what's slippery, and what's simply wrong.
The claim holds up. The evidence is sound and the reasoning is honest, and you get the receipts to prove it.
Technically true, deliberately framed to fool you. This is where most misinformation lives, and where the app shines.
It falls apart under scrutiny. See exactly which parts are wrong and the real science that replaces them.
Learn the tricks
Spot the fallacy every time.
Premium unlocks the full fallacy library with plain-English examples, explanations, and real-world case studies pulled from the wild.
I've spent a decade debunking pseudoscience one video at a time. This is that instinct, in your pocket, for any claim you come across.
Stop wondering. Start knowing.
Your first analysis is free, and so is a new one every single day. Download Is This BS and never take a claim at face value again.
Download on theApp Store