CASE / 006MOBILITY DOCUMENTS / 2026
Product strategy · UX/UI · Full-stack engineering
A private sale.
A clear handoff.
Aptivo turns private vehicle transfer paperwork into one guided, state-aware workflow for seller and buyer.
- ROLE
- Strategy / Design / Engineering
- PLATFORM
- Responsive web / Android
- STATUS
- Release candidate
The moment behind the paperwork
Keys change hands.
Confidence should too.
The product starts with the human moment: two people need to agree on the same facts and understand what happens next.
GOOD AFTERNOONYour vehicle transfers
CAR
TX-82F4A1902018 Honda Accord
North Carolina title → South Carolina registration
BUYER CONFIRMEDReady for review
- ✓Vehicle and sale details
- ✓Seller information
- ✓Buyer confirmation
- 4Secure checkout and document pack
01
The challenge
The sale is simple.
The obligations are not.
A private vehicle sale crosses identity, title, mileage, lien, state, signature, notary, tax, registration, and recordkeeping concerns.
The experience had to reduce uncertainty without pretending software is a motor vehicle agency or a substitute for professional advice.
Capture the right facts.
Show the next step.
Keep both parties aligned.
02
Experience principles
Serious paperwork.
Human language.
One decision at a time.
A progressive intake replaces the blank-form problem with a clear sequence: vehicle, jurisdictions, terms, then people.
Seller and buyer see one truth.
Secure invitations connect both parties to the same transfer record while preserving ownership and access boundaries.
Review first. Pay once.
People can build and inspect their transfer before a clearly stated $14.99 checkout. No subscription and no surprise renewal.
03
The platform
From VIN to filing plan.
One continuous transfer.
Every stage builds on the same transaction record so details do not have to be re-entered or reconciled later.
Guided intake
Vehicle, title, jurisdiction, price, mileage, lien, seller, and buyer information in a focused four-step flow.
START HEREVIN assistance
NHTSA-backed decoding and mobile camera support reduce typing and catch identification mistakes earlier.
State-aware guidance
50-state and D.C. reference coverage connects title state and buyer registration state to relevant steps.
Buyer invitation
Expiring links let the buyer review and confirm their own information before the pack is prepared.
SHARED WORKFLOWRequirements review
Notary indicators, paper-title requirements, forms, notices, and filing actions surface before checkout.
Secure checkout
Stripe-hosted payment with signed webhook fulfillment keeps payment truth on the server.
Personalized PDFs
A bill of sale, odometer disclosure when applicable, and separate seller and buyer action packs.
Private document center
Authenticated downloads, expiring shared links, audit events, data export, and account deletion controls.
04
Connected journey
Two people.
One source of truth.
The workflow makes responsibility visible without turning the experience into a maze of forms.
Describe the saleVIN, title, states, mileage, price, and exceptions
SELLERConfirm the buyerSecure invitation, identity details, and shared review
BOTHReview requirementsForms, notary indicators, notices, and filing steps
GUIDANCEPay and prepareVerified checkout triggers personalized document generation
PLATFORMSign, hand off, fileSeparate action packs keep each party moving
SELLER + BUYER05
Visual direction
Calm enough to trust.
Warm enough to begin.
Deep teal creates authority without institutional coldness. Cream lowers visual pressure, and coral focuses attention on decisive moments.
TRANSFER TEAL#0F766EDEEP TRUST#123D36HANDOFF CORAL#F3A678PAPER CREAM#FBFAF7
TYPE / CLEAR + REASSURINGPaperwork without
the guesswork.
the guesswork.
Confident display type creates momentum; compact labels and generous spacing make detailed transfer information easy to scan.
Buyer details confirmedBoth parties can review the same record.
Document packOne secure payment · no subscription
06
The deliverable
One checkout.
Two clear action packs.
The final experience does more than produce a form. It gives seller and buyer separate, role-specific instructions tied to the same sale.
All names and transaction details shown here are demonstration data.
Vehicle bill of saleShared transaction record for seller and buyer review
Odometer disclosureIncluded when the transaction indicates it applies
Seller action packSigning, plates, notices, and handoff checklist
Buyer action packTitle, registration, tax, and agency visit checklist
07
Platform foundation
Sensitive details.
Production-minded protection.
Security, payment integrity, and document lifecycle controls are part of the product—not cleanup work after launch.
Records stay scoped
Query-level ownership and participant checks protect transactions and generated documents.
Webhook-gated delivery
Only verified Stripe events can unlock generation, with retry-safe fulfillment.
Documents expire
Private object storage and revocable, time-limited links reduce long-lived exposure.
Privacy is actionable
Data export, password recovery, email verification, and deletion controls are built in.
REACT / TYPESCRIPTIONIC / CAPACITORDJANGO / DRFPOSTGRESQLSTRIPE / WEBHOOKSPRIVATE S3 STORAGE
The outcome
A complex transfer becomes a calm, shared path forward.
Aptivo brings intake, buyer collaboration, state-aware guidance, payment, personalized documents, and post-sale actions into one responsive product—prepared for the web and Android first.