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Vendor Vault
For collectibles trade fairs

The booth POS made for TCG, sealed & merch.

Catalog, live sales, trade-in calculator, event ROI per fair — all offline-first, on your phone, tablet or laptop. Privacy-first by design.

iOS & Android coming to the App Store and Google Play.

  • Offline-first
  • No tracking
  • Export your data anytime
Vendor Vault POS app screen
Built on a real booth iOS · Android · Web 7-day Pro trial No vendor lock-in

Features

Built for the fair pro

Every feature was tested under fair conditions: dim lights, fat fingers, no Wi-Fi, customers waiting.

  • Smart catalog

    5 product types (single card, graded, sealed, merch, generic). Photos, search, A–Z scroll, optional purchase price.

  • Live POS

    Cash session, parked carts ("I’ll come back with my card"), ghost products for bulk. Touch targets sized for fair speed.

  • Trade-in calculator

    Two adjustable offers (cash / store credit) and apply at checkout. Photo capture to prevent disputes.

  • QR receipts

    Optional public HTML receipt link. Customer scans the QR to keep a copy. No printer needed.

  • External fairs feed

    Browse upcoming fairs (IT · US · UK · CA · AU · DE · IE) and create events with one tap. Free tier.

  • Pro

    Event ROI tracking

    Per-fair revenue, COGS and expenses with a real margin number. Decide which fairs to repeat next year.

  • Pro

    Multi-device sync

    Phone at the till, tablet on the table, laptop in the back. Real-time changes across all your devices.

  • Pro

    Cloud backup & restore

    Automatic encrypted backup. Reinstall anywhere, restore everything.

  • Pro

    Up to 5 product photos

    Upload and sync photos across devices, WebP optimized (~100 KB each). Pro→Free retention preserved.

  • Pro

    Multi-user PIN

    Multiple cashiers per booth, each with bcrypt-hashed PIN. Header always shows who is selling.

  • Pro

    Consignment management

    Track items left by other vendors, calculate splits, generate C2C declarations as PDF.

  • No vendor lock-in

    Versioned JSON export, included on Free. Your catalog is yours, today and forever.

How it works

A guided tour of your booth

A short walkthrough covering everything you do at the fair, from check-in to ROI. Designed to be picked up in minutes, not hours.

  1. Build your catalog once, find anything in seconds — Vendor Vault

    01 · Catalog

    Free

    Build your catalog once, find anything in seconds

    Add products in three taps and search by name, language, set, EAN or grading slab. The A–Z scroll rail keeps the catalog usable even with thousands of items.

    • Five product types: card, graded, sealed, merch, generic
    • Photos, conditions, optional purchase price for analytics
    • Live search + filters tuned for fair-floor speed
  2. Add a new product without leaving the till — Vendor Vault

    02 · Add product

    Free

    Add a new product without leaving the till

    A focused form with type-specific fields, barcode scan, photo capture and optional purchase price. Save and you’re back to the catalog ready to sell.

    • Barcode scan auto-prefills the EAN — no typing
    • Type-specific fields: language and condition for cards, grading slab for graded
    • Optional purchase price kept private, used only for your margin
  3. Sell with cash, card, trade credit — even mixed — Vendor Vault

    03 · Live POS

    Free

    Sell with cash, card, trade credit — even mixed

    Open a cash session, ring up sales, park carts when a customer says "I’ll be back with my card". Touch targets sized to be hit on the run, not at a desk.

    • Cash session with starting float and end-of-day reconciliation
    • Mixed payments at checkout (cash + trade credit + card external)
    • Parked carts and ghost items for bulk sales
  4. Two sliders, one fair offer for both sides — Vendor Vault

    04 · Trade-in

    Free

    Two sliders, one fair offer for both sides

    Show the customer two adjustable offers (cash and store credit) and apply the one they pick directly at the next checkout. No mental math, no "wait, can I see that again".

    • Independent withhold sliders for cash vs. store credit
    • Photo capture of the trade-in to prevent disputes
    • C2C declaration PDF on Pro for cross-border fairs
  5. Your booth’s command center — Vendor Vault

    05 · Tools hub

    Free

    Your booth’s command center

    A single screen wires together everything beyond pure selling: the events feed, expenses, off-app payments, your buy-list, the checklist, exports, settings.

    • Buy-list and checklist for what you need to find or pack
    • Off-app payments tracker (PayPal, Satispay, IBAN, cash on delivery)
    • Per-event expenses with one-tap categories
  6. Browse upcoming fairs without opening a browser — Vendor Vault

    06 · Events & external feed

    Free

    Browse upcoming fairs without opening a browser

    A curated feed of upcoming fairs across IT, US, UK, CA, AU, DE and IE, refreshed weekly. Tap one to create your event with name, location and dates pre-filled.

    • Filter by country, scroll the next 60 days
    • One-tap create event from feed entry
    • Active event flag: every sale is auto-tagged for ROI
  7. Unlock more with Pro

    When the booth grows up

    You start free, single-device, and stay there as long as you want. The moment you put a tablet on the table next to the till — or the second cashier, or the next fair — Pro is right there.

    See pricing
  8. Phone, tablet, laptop — same booth, same data — Vendor Vault

    07 · Multi-device sync

    Pro

    Phone, tablet, laptop — same booth, same data

    Phone at the till, tablet on the table, laptop in the back office. Every sale, every catalog edit, every photo flows in real time so the team never argues about whose copy is right.

    • Real-time updates on all your devices
    • Last-write-wins conflict resolution per row
    • Works offline, syncs the moment you have signal again
  9. Reinstall anywhere, your booth comes back — Vendor Vault

    08 · Cloud backup & restore

    Pro

    Reinstall anywhere, your booth comes back

    Lost a phone? Switched device mid-fair? One login and your full catalog, sales history, photos and settings are back where you left them.

    • Automatic encrypted cloud backup, no manual export
    • Restore from any device in a single login
    • Photos kept after Pro→Free downgrade
  10. Know which fairs deserve a return ticket — Vendor Vault

    09 · Event ROI & analytics

    Pro

    Know which fairs deserve a return ticket

    Per-event revenue, COGS and expenses with a real margin number. Top products, peak hours, comparison across fairs — read your booth like an open book.

    • Revenue − COGS − expenses, per fair
    • Top products and peak-hour breakdown
    • Year-over-year comparison once you have the history
  11. Bring the team behind a PIN, in your colours — Vendor Vault

    10 · Multi-user & branding

    Pro

    Bring the team behind a PIN, in your colours

    Owner signs in once, additional cashiers use a local PIN. The POS header always shows who is selling. Theme, accent and currency follow your brand.

    • Multi-user with bcrypt-hashed PINs, Owner + cashiers
    • Theme System / Light / Dark, custom accent picker
    • Branding for receipts and exports

Pricing

Pricing

Free is fully usable on a single device. Pro adds sync, cloud and analytics.

Free

€0 forever
  • Full Catalog, POS, Trade-in
  • Works 100% offline
  • 1 photo per product (local)
  • Last 30 days history
  • Single device
  • JSON export & import
  • External fairs feed
Get the app
7-day free trial

Pro

€9.99 / month

€109.89 / year — 2 months free

  • Everything in Free, plus:
  • Multi-device sync
  • Up to 5 photos per product + cloud
  • Unlimited history & analytics
  • Automatic cloud backup & restore
  • Event ROI tracking
  • Multi-user with PIN
  • Consignment + C2C PDF
  • Custom branding
Get the app

No credit card to start. Cancel anytime in your store account.

FAQ

Frequently asked

Is Vendor Vault a fiscal POS?
No. Vendor Vault is an internal sales tracker for your booth. The fiscal receipt is issued by your external cash register. Vendor Vault keeps your catalog, sales history, ROI and trade-in math.
Does it really work offline?
Yes. The Free tier never opens a network connection. Pro syncs in the background only when there is connectivity, and falls back gracefully when the venue Wi-Fi is gone.
What happens to my data if I cancel Pro?
You go back to Free with all your data intact on your device, plus a permanent retention window for your Pro photos. No reset, no lock-in.
Can I export my catalog?
Yes, on Free too. JSON export and import is included. The schema is versioned and documented for future TCG whitelabel integrations.
Which payment methods are supported?
Cash and card-external (you charge with your existing terminal) are core. Trade credit is supported natively. Mixed payments at checkout are supported.
How are photos handled?
Free stores 1 photo per product locally on the device. Pro syncs up to 5 photos per product (WebP optimized, ~100 KB each) to private encrypted storage, accessed via short-lived signed URLs.
Can multiple cashiers share one booth?
Yes, with Pro. The Owner signs in once, additional cashiers use local PIN profiles (bcrypt-hashed). The POS header always shows the active cashier.
Is my data sold or shared?
Never. We only store what is strictly required to run sync and billing (email, subscription state). No analytics SDK, no advertising, no third-party trackers.
Which platforms are supported?
iOS, Android and Web (PWA-ready). Single Flutter codebase. The Web app is live at vendor-vault.app/app/ — install it as a PWA on your phone.
Where is my data hosted?
On EU servers (Frankfurt). Encrypted at rest, encrypted in transit, GDPR-friendly by design.

Download

Get Vendor Vault

iOS and Android apps are landing on the official stores soon. In the meantime there is also a web preview.

Ready for the next fair?

Open Vendor Vault on your phone, tablet or laptop. Setup in under 60 seconds.