Offline Mode

Keep selling when the internet doesn't

Internet goes down? You keep ringing sales. AdaptBooks caches the entire POS locally using Service Workers and IndexedDB. Transactions queue automatically and sync the moment connectivity returns. Your customers never know the difference.

books.adaptensor.io/pos
OFFLINE3 transactions queued
Will sync when online
Crickets (50ct)
$3.49
Bermuda Hay
$8.99
.22 LR 50 Rd
$7.99
Key Copy
$2.99
48 Qt Cooler
$34.99
Dog Food 40lb
$24.99
Cart · 2 items
2× Bermuda Hay$17.98
1× Key Copy$2.99
Total$20.97
Pay $20.97
Payment will sync automatically
Full POS
Cached Locally
Auto
Sync on Reconnect
AES-256
Card Encryption
Zero
Lost Sales
Key Capabilities

Everything you need, nothing you don't

Service Worker Caches Entire POS

Product catalog, pricing, tax rates, and UI — all available without internet.

IndexedDB Stores Transactions

Every sale is stored locally in a structured database until sync completes.

Automatic Sync on Reconnect

The moment internet returns, queued transactions upload in order. No manual step.

Stripe Terminal Offline Processing

Card payments are stored encrypted and processed when connectivity resumes.

Visual Connection Status

Clear indicator shows online/offline status and number of queued transactions.

Transaction Queue with Retry

Failed syncs retry automatically with exponential backoff. Nothing gets lost.

Complete Feature Set

What's included

Full product catalog cached locally
Ring sales with no internet
Card payments stored encrypted until sync
Cash and account payments work immediately
Automatic conflict resolution on reconnect
Queued transaction count visible to cashier
Customer records cached (last 1,000)
Works on any device with a modern browser

Ready to get started?

Start your free trial today. No credit card required. Full access to Offline Mode and every other module.

Free 30-day trial · Free migration from QuickBooks · Cancel anytime

Offline Mode — AdaptBooks