Is This BS?
Built with Professor Dave ExplainsSay the right thing
when it matters.
Spot the weak claim. Build the rebuttal. Hold your ground. Then replay it stronger with daily practice built with Professor Dave Explains.
How it works
One rep from frozen to ready.
One short loop trains the whole response: detect, rebut, defend, replay. Start with a daily scenario or a claim you just checked.
Spot the weak move
Name the fallacy or evidence gap before you answer. The claim checker can turn something you found into a practice rep.
Build the rebuttal
Write the response you wish you had in the moment. Your coach points to one win, one leak, and a stronger version.
Hold your ground
Answer the pushback, then replay your line in your own words. Three reps unlock a weekly boss and a clear before-and-after.
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.
Built from Professor Dave's decade of teaching science and challenging pseudoscience: evidence first, name the weak move, and answer the argument that was actually made.
Have the words next time.
One full rebuttal rep and one claim check stay free each day. Download Is This BS? and turn the next bad argument into practice.
Download on theApp Store