FactGuard
Evidence Over Opinion

Facts grounded in reason,
defended by evidence.

Instant cited verdicts and full reasoning — on-device or online. Your queries stay private; zero ads, zero tracking.

🧭 Reason-based 🔗 Cited sources ⚖️ Non-partisan 🔒 Privacy-first
Web app live now iOS app coming soon
Check a claim — free See how it works

3 free checks a day · no sign-up to start · no credit card

Example verdict

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✓ True Confidence —
FactGuard for iPhone — coming soon

Information moves faster than
verification can keep up.

Evidence-Based Fact Verification

A false claim can circle the world before a correction is written. AI has accelerated the pace — and the volume — of misinformation to a degree that individuals, newsrooms, and communities are no longer equipped to handle alone.

The problem

AI-generated content, viral misinformation, and the collapse of shared epistemic ground have made it harder than ever to distinguish verified facts from false claims — even for careful, well-meaning people.

Our stance

Claims are evaluated against evidence — not authority, not consensus, not partisan preference. We do not take sides. We take the side of what's verifiable, with our reasoning shown openly.

Our goal

Build the infrastructure — tools, frameworks, APIs — that makes cited, reason-grounded fact verification fast enough to matter in a world that moves at the speed of a share.

Why FactGuard is different

Most fact-checking tools give you an answer. We give you the reasoning — with the receipts to back it.

Transparent reasoning chain

Every verdict shows the logic that produced it — never a bare assertion.

FactGuard✓ Yes
Typical AI checkers✗ No

Cited primary sources

Links to real primary sources you can open and judge yourself — not paraphrases.

FactGuard✓ Yes
Typical AI checkers✗ No

On-device privacy option

A Private mode that verifies entirely on your device — nothing leaves your phone.

FactGuard✓ Yes
Typical AI checkers✗ No

No ads & no tracking

No advertising SDK, no IDFA, no third-party analytics. A tool, not a data broker.

FactGuard✓ Yes
Typical AI checkers✗ No

Graded confidence score

A calibrated 0–100 score — because reality is rarely a blunt true/false.

FactGuard✓ Yes
Typical AI checkers✗ No

Non-partisan by design

The same standards applied to every claim, regardless of political origin.

FactGuard✓ Yes
Typical AI checkers✗ Varies
Grounded in peer-reviewed research See the methodology →
Non-partisan by design No editorial line, no agenda
Transparent — see our receipts Every verdict shows its sources →

Our principles

The commitments that govern every product, decision, and line of code we ship. Tap any one to read the detail.

Transparent reasoning
We always show the why. A verdict without its reasoning is just an assertion — and assertions are precisely what we exist to scrutinize. No black boxes
Cited evidence
Claims that cannot be sourced cannot be verified. Every verdict links to real primary sources — not paraphrases — so you can judge for yourself. Real sources only
Calibrated confidence
Reality is rarely binary. We return a graded confidence score — not a blunt true/false — because honesty requires acknowledging degrees of certainty. Graded verdicts
Non-partisan by design
The same standards apply to every claim regardless of its political origin. No editorial line, no agenda. Neutrality is an engineering decision, not a disclaimer. Neutral by design
Manipulation-resistant
No ads, no sponsored verdicts, no affiliate relationships. Our revenue comes from users — not from parties with an interest in how claims are rated. No conflicts
Privacy-first
An optional on-device mode keeps your claims entirely on your phone. No advertising SDK, no tracking, no data brokerage — ever. On-device option

What we're building

The FactGuard web app is live now — open it in any browser, no install needed. The iOS app and broader infrastructure are coming soon.

FactGuard App

LIVE on web · iOS coming soon

The flagship. Paste any claim, headline, or URL and receive an instant verdict from FactGuard's verification engine — with full reasoning and real sources attached. Quick, Thorough, or Private mode. Zero ads. Zero tracking.

Launch the web app Coming soon to the App Store

Fact-Check API

Early access

Programmatic claim verification any product or developer can integrate. Submit a claim, receive a structured verdict with confidence score, cited sources, and reasoning — all via a clean REST API. Free tier: 100 calls/day.

View the API

MCP Server

Early access

A Model Context Protocol server that lets AI assistants verify facts in real time — with sources and reasoning attached to every result. One config line to drop into Claude, Cursor, or any MCP host.

See the quickstart

FACTVerification AI Framework

Coming soon

An open framework for building evidence-based verification applications. Every assertion carries its reasoning chain and source attribution — no black boxes.

Open Framework

Built to cut through the noise

Every feature is designed around one goal: a fast, trustworthy answer you can actually verify.

Your queries never leave your iPhone

Enable Private mode and verification runs entirely on your device. No server, no log, no exposure — fact-check even the most sensitive topics with full confidence.

On-device, private

Native iOS — not a web wrapper

Built from the ground up in SwiftUI for iPhone and iPad. Crisp animations, Share Sheet integration, Dynamic Type support, and a feel that belongs on your home screen — not a Chrome tab.

Native SwiftUI

Instant verdicts, real sources

Submit any claim, headline, or URL — get a sourced verdict in seconds, with the full reasoning chain shown and primary sources you can check yourself.

Core

Three verification modes

Quick for fast, everyday checks. Thorough for deeper, more rigorous analysis. Private for on-device verification — your claims never leave your phone.

Verification modes

Bias detection

FactGuard surfaces the framing and potential bias in a claim alongside the verdict — so you understand not just the accuracy finding, but how language shapes what you believe.

Analysis

Shareable verdict cards

Export any result as a polished verdict card — built to spread verified facts, not just claims. Share to Stories, Messages, or anywhere with one tap.

Share

Zero ads. Zero tracking. Ever.

No advertising SDK, no IDFA, no ATT prompt, no third-party analytics. FactGuard is a tool — not a data broker.

Zero tracking
Coming soon to the App Store

FactGuard on iPhone

The full fact-checking experience — native, private, instant.
Coming soon to the App Store.

iOS App Store coming soon 🔒 On-device private mode ⚡ Native SwiftUI 🚫 Zero ads

Auto-advancing · Home → Verdict → Trending → Share ▶

Everything in FactGuard Pro — on iPhone

Pro unlocks the full experience. Features sourced from our pricing page.

Pro
Unlimited fact-checks
No daily cap. Verify as many claims as you need, any time.
Pro
Thorough verification
Deep, multi-source analysis for complex or high-stakes claims.
Pro
Shareable verdict cards
Export polished cards to Stories, Messages, or anywhere — one tap.
Pro
Fact Feed — full access
Browse the full trending checks feed with no restrictions.
Pro
Priority new features
Pro subscribers get early access to every new capability we ship.
Free
On-device private mode
Verification runs entirely on iPhone. No server, no log, no exposure.
Free
3 quick checks/day
Instant cited verdicts for everyday claims — always free, no card needed.
Free
Zero ads. Zero tracking.
No advertising SDK, no IDFA, no analytics. A tool, not a data broker.

Coming to iPhone — get notified.

Be first to know when FactGuard hits the App Store. Create a free account now and we'll notify you the moment it launches.

Notify me at launch See Pro pricing

Free account · no credit card · we'll notify you when the App Store listing goes live

Simple, honest pricing

Start free — 3 fact-checks per day, no credit card. Upgrade to Pro anytime.

Free
$0
forever
  • ✓ 3 free fact-checks per day
  • ✓ Quick checks
  • ✓ Private on-device mode
  • ✓ Fact Feed access
  • ✓ Thorough verification
  • ✓ Unlimited checks
  • ✓ Shareable verdict cards
Launch the web app
★ Best value
FactGuard Pro — Annual
$36.99
per year · $3.08/mo
  • ✓ Unlimited fact-checks
  • ✓ Thorough verification + all modes
  • ✓ Shareable verdict cards
  • ✓ Fact Feed — full access
  • ✓ Priority new features
  • ✓ 1-week free trial · cancel anytime
Get Pro Annual
FactGuard Pro — Monthly
$3.99
per month
  • ✓ Unlimited fact-checks
  • ✓ Thorough verification + all modes
  • ✓ Shareable verdict cards
  • ✓ Fact Feed — full access
  • ✓ 1-week free trial · cancel anytime
  • ✓ No annual savings
Get Pro Monthly

Subscriptions managed via the App Store. Cancel anytime via App Store Settings → Subscriptions.
Price shown in USD. Actual price may vary by region.

Accuracy deserves
better infrastructure.

Paste a claim, headline, or URL and get a sourced, reasoned verdict in seconds. Free, private, and no credit card — verify before you share.

Check your first claim — free

3 free checks a day · no tracking · iOS app coming soon to the App Store