SHIELD YOUR WALLET FROM JUNK FEES & OVERCHARGING

SPOT UNFAIR TERMS IN YOUR CAR CONTRACT INSTANTLY.

Don’t sign until you check. SignSpark scans your dealership paperwork against real-time state laws to flag hidden fees and compliance risks.

Most buyers save $1,400+ at the signing table — based on real contract analysis.

Download on the App Store

GET IT ON Google Play

100% Private & Secure|State-Specific Fee Rules|Powered by CarBuyInsight Data

AI That Keeps Your Deal Fair

Our intelligent system reviews your contract to uncover hidden fees, built on state-specific fee rules and ensure transparency — before you sign.

100% Private & Secure

Instant Analysis

Built to Protect Car Buyers

About SignSpark AI

We Level The Playing Field.

For too long, the car-buying process has been designed to confuse consumers. Dealerships have the experience; you have the confusion.

We built SignSpark to change that. By combining state-specific laws with the proprietary data from CarBuyInsight.org, we turn complex contracts into clear, undeniable facts.

We don’t just scan paper; we give you the leverage to say “No” to junk fees. Our AI is your pocket expert, ensuring clarity when it matters most: before you sign.

Built on the nation’s largest consumer contract database from CarBuyInsight.org
Designed alongside federal and state consumer protection guidelines

Clarity when it matters most — before you sign.

Our Mission

WE ENGINEER FAIRNESS.

The system is rigged to confuse you. We built the intelligence to fight back.

Unbiased Advocacy

We don’t work for dealerships. Our AI is programmed to serve only your financial interests, detecting terms that favor the seller over the buyer.

Real-Time Defense

Stop predatory tactics before they start. We flag ‘junk fees’ and inflated add-ons instantly, giving you the leverage to say ‘No’.

Data-Driven Leverage

Powered by CarBuyInsight™, our algorithms compare your deal against thousands of others to ensure you never pay above market standards.

Key Features

The Ultimate Car Buying Toolkit.

Smart features built to bring you clarity, confidence, and comfort before you sign.

Instant Contract x-ray

Digitize messy scans in seconds. Reveal every buried line item.

Hidden Fee Detector

Instantly spots non-compliant fees, fake taxes, and duplicate charges.

50-State Legal Check

Validates all fees against real-time local laws (Powered by CarBuyInsight™).

Real-Time Negotiation Coach

Get the exact AI-generated script to decline fees and win.

How It Works

Understand Your Deal in 3 Simple Steps

Our intelligent system reviews your contract to uncover hidden fees and ensure transparency — before you sign.

COMING SOON

Negotiate With Confidence

Your Pocket Negotiator.

Arm yourself with real-time AI analysis. Scan contracts, spot hidden fees, and negotiate with confidence—right at the dealership desk.

COMING SOON

App Store

Google Play

Secure & Private. Your data is never shared.

Blogs

Expert Insights & Saving Strategies

Don’t just buy a car. Master the deal. Practical advice from negotiation experts and data scientists.

SCAMS 5 min read

The "Dirty Dozen": 12 Hidden Fees Car Dealers Hope You Miss

You’ve spent weeks researching the perfect car. You’ve test-driven it. You’ve even agreed on a monthly payment.

Read Guide

NEGOTIATION 7 min read

Stop Asking, Start Negotiating: How AI Scripts Saved One Buyer $2,400

When you ask a vague question, you get a vague answer: "We're already losing money on this car," or "That's just the standard fee everyone pays."

See the Scripts

NEGOTIATION 5 min read

The “MSRP” Myth: What Our Analysis of 10,000 Contracts Reveals.

We analyzed real purchase agreements to find the true transaction prices. See how much people are actually paying for popular models vs. the sticker price.

01

Transparency isn't rude; it's smart. Our Fairness Report gives you professional, data-backed facts so you can ask confident questions without being aggressive. Most users find dealers back down quickly when shown the data.

02

SignSpark users save an average of $1,400 by removing junk fees and negotiating inflated add-ons. We instantly flag overcharges and duplicate fees that human eyes often miss.

03

Yes. We use bank-level encryption (AES-256) to protect your documents. We never sell your personal data to dealerships or third parties. You are the only one who owns your deal.

04

Absolutely. We analyze Purchase Agreements, Lease Contracts, and Finance Contracts for both New and Used vehicles across all 50 states.

05

Yes. Scanning takes seconds. If you choose to unlock the full report, we use Apple Pay and Google Pay for instant, one-tap access—so you never have to fumble with credit cards in front of the finance manager.

06

If our AI finds no hidden fees or risks, you will see a "Green" Fairness Score for free. You only choose to upgrade if we find potential savings and you want the specific details to negotiate them.

Have a Question?

Everything you need to know about your data security. anonymity. and how to claim your instant rewards

Stop guessing. Start saving.

Upload your contract now for an instant fairness check.