DEALonSEAL
Buy & sell pre-owned devices with a tamper-proof digital agreement.
No handshakes. No disputes. Just sealed deals.
How It Works
Four simple steps to turn a handshake into a legally-credible digital record.
Enter Details
Both buyer and seller fill in their personal info and the device's full specs — model, IMEI, condition, price.
Capture & Upload
Take photos of the device and both parties. Visual evidence is embedded directly into the digital agreement.
OTP Verification
Both parties verify their phone numbers via OTP, providing a double-layer of identity confirmation.
Sealed Certificate
A professional PDF certificate with a unique QR code is instantly generated. Scan it anytime to verify.
Built for Trust
Every feature is designed to eliminate fraud and make second-hand device sales as safe as buying from a store.
Tamper-Proof Agreements
Every deal is cryptographically sealed. Once generated, the certificate cannot be altered — giving both parties ironclad protection.
Dual OTP Identity Check
Both buyer and seller verify via their registered phone numbers. No fake accounts. No impersonation. Real people, real deals.
Professional PDF Certificate
Instantly generates a beautifully formatted PDF containing all deal details, photos, and both parties' verified information.
QR Code Verification
Every certificate comes with a unique QR code. Scan it from anywhere to instantly verify the deal's authenticity.
Photo Evidence
Device photos and party photos are embedded in the agreement, making it impossible to dispute the condition at time of sale.
Instant & Paperless
The entire process takes under 5 minutes. No printing, no scanning, no notary visits. Just open the app and seal the deal.
A Professional Record
In Your Pocket
DEALonSEAL generates a beautiful, court-admissible style PDF that includes the complete device history, both parties' verified identities, transaction photos, and a globally-unique QR verification code.
- Full device specs & IMEI number
- Buyer & seller verified identities
- Timestamped photos of the device
- Unique QR code for instant verification
- Digital certificate ID for record keeping
Real People, Real Deals
Join a growing community of buyers and sellers who chose safety over risk.
"Sold my MacBook to a stranger and felt completely safe. The certificate gave me peace of mind I never had before."
"Bought a used iPhone and could verify every detail through the QR code. This app is a game changer."
"Finally an app that treats second-hand transactions seriously. Professional, fast, and genuinely trustworthy."
Your Deal.
Sealed Forever.
Stop trusting luck. Start trusting DEALonSEAL — the only app that turns a verbal agreement into a verified digital certificate in minutes.