Stop Paying Monthly for POS Software.
POSAIC runs on your devices — no server, no internet required, no monthly fees. Install and start selling in 5 minutes.
How? Software costs nothing to copy. We only charge for services that cost real money — or nothing at all if you use our card processor.
Current Reality
Sound Familiar?
"$100/month just for basic POS software."
"Internet goes down and we can't take orders."
"We have no idea who has access to our sales data."
"Adding a second register costs extra every month."
What we build
Here's How POSAIC Fixes That
No Server. No Downtime.
No central server. Every device works on its own and syncs directly with the others over your local network. No central server. When the internet drops, orders, kitchen tickets, and inventory keep flowing.
Free Forever
Not a trial, not a trick. POSAIC is 100% free POS software. Period.
Use Your Own Devices
Already have a laptop, tablet, or old iPad? That's your POS terminal. No special hardware needed.
Works Without Internet
Internet goes down? Orders, KDS tickets, inventory, and receipts keep running — entirely on your device. Cash sales always work; card auth uses your processor's offline mode. Cloud sync resumes when the connection comes back.
Your Data, Your Device
Sales data is encrypted and stored on YOUR device. No one else can access it. Optionally sync to the cloud.
Know Your Numbers
10 real-time reports: sales trends, best sellers, staff performance, cash tracking — all built in.
AES-256 Encryption
AES-256 encryption protects every transaction. Your customer card data is never stored.
Getting started
Your First Sale in Under 5 Minutes
Download & Install
Double-click the installer. No tech skills needed.
Add Your Items
Name your store, add a few menu items, set prices.
Start Selling
Ring up your first sale. Add more devices anytime — they sync automatically.
Works With Tools You Already Use
Our Heritage
30 years of software craftsmanship, 15 years in POS.
Our founder has been building software for three decades — and spent the last 15 years deep in the POS industry, installing, configuring, and repairing systems for small businesses across NY and NJ.
After watching merchants get trapped by $100/month fees, systems that crash without internet, and vendors who hold data hostage — he decided to build something better. With AI as a development partner.
What's Next
We're just getting started
AI-powered features, self-service kiosk, online ordering, and more. Your feedback shapes what ships next.
From the blog
Read before you switch
Honest takes on POS, pricing, offline mode, and data ownership.
8 Overlooked Restaurant POS Features You'll Regret Ignoring
Most buying guides list the same 20 features. Here are 8 overlooked ones — from offline behavior to data export rights — that matter on day 90.
schedule 15 minArchitectureEvent Sourcing for POS: Why Every Transaction Should Be Append-Only
Most POS systems overwrite your data on every update. Event sourcing keeps the full history — every order, every change, every refund.
schedule 10 minArchitectureOffline POS Systems: Why Your Restaurant Can't Afford to Skip This
Internet outages cost restaurants thousands. Here's how a true offline-first POS protects your sales when the cloud goes dark.
schedule 15 minComparisonPOSAIC vs Square 2026: The Complete Comparison
Side-by-side breakdown of monthly costs, transaction fees, offline mode, data ownership, and hardware requirements.
schedule 12 minSetup GuideHow to Set Up Your POS Without Internet
Step-by-step guide to running your business when the Wi-Fi goes down — printers, payments, and sync.
schedule 8 minPrivacyWhy Your POS Data Should Stay on Your Device
When your sales data lives on a vendor's server, you don't own your business. Here's why local-first is the safer model.
schedule 6 minJoin Early Access
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store owners on the waitlist
Growing every day.
Launch Status
Save $700–$1,800 per year.
Download POSAIC now. It's free, and it takes 5 minutes.