Is This BS? Claim & Fact Check
By Prof Dave, Master Debater
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Is This BS? is the science fact-checker by Professor Dave Explains, the trusted voice behind 4 million YouTube subscribers and 480 million views.
DAILY DEBUNK CHALLENGE
Every day, one viral science claim. Your job: spot the logical fallacy. It takes under two minutes. Build your streak, earn XP, and level up your Science Literacy score. The daily challenge is always free.
AI CLAIM CHECKER
Paste any claim, headline, or URL. Professor Dave’s app analyzes it in seconds and tells you whether it’s BS, legitimate science, or somewhere in between. Every result includes:
* A verdict with a confidence score
* The logical fallacies identified
* An evidence-based breakdown
* “How Dave Would Say It” — his signature direct take
FULL FALLACY LIBRARY
Learn 15+ logical fallacies with real-world examples and links to Professor Dave’s video breakdowns. From cherry-picking to false cause to conspiracy thinking, know them all.
SHAREABLE VERDICT CARDS
Generate a branded result card and share the truth on social media. Show receipts when someone spreads misinformation.
WHY IS THIS BS?
Professor Dave Explains has spent a decade teaching science and debunking pseudoscience on YouTube. Is This BS? puts that expertise in your pocket. Whether you’re checking a health claim from a family group chat, a headline on social media, or a conspiracy theory from a coworker, Dave’s AI has your back.
Built for students, skeptics, science enthusiasts, and anyone tired of misinformation. Is This BS? makes critical thinking a daily habit.
Check facts. Spot fallacies. Detect BS.
Privacy: https://www.builtbyfoundry.io/is-this-bs/privacy
Terms: https://www.builtbyfoundry.io/is-this-bs/terms
EULA: https://developer.apple.com/documentation/appstoreconnectapi/end-user-license-agreements-eula
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Meet The Debate Master, your new final challenge on the debate ladder, with refreshed dialogue throughout the fight and scorecard.
- Your stars and progress from the former final boss carry forward automatically.
The developer, BUILT BY FOUNDRY, INC., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BUILT BY FOUNDRY, INC.
- Size
- 67.1 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 1 Month $4.99
- 12 Months $29.99
- Copyright
- © 2026 Playpen Games, Inc.