Paybrain: POS & AI Invoicing

Ethereal Inc.

About this app

Paybrain is the point of sale and invoicing app that runs your business from your Android phone — with AI that does the busywork.

YOUR PHONE IS A REGISTER
Ring up sales from your own catalog. Tap through categories or scan barcodes with your camera, then take payment with Tap to Pay, cash, or put it on a tab. It's the same register as your counter, so sales, tabs, receipts and members all line up.

AI INVOICING
Snap a few photos of the job, describe what you did the way you'd text it, and Paybrain drafts the invoice from your own price list. Split it into a deposit and a final if you need to. Anything the AI had to estimate is flagged, and nothing is saved or sent until you say so.

SCAN IT IN, SCAN IT OUT
Count deliveries and shelves with your camera. Every item carries a live count per location, and every sale ticks it down.

PURCHASE ORDERS THAT WRITE THEMSELVES
AI reads your recent sales, spots what's out, low or about to run out, and drafts the reorder — one order per supplier, ready to email. Every quantity comes from your own numbers.

CARD PRICING, BUILT IN
Show card prices on every item. Customers paying cash get the discount automatically, and it's itemized on the receipt.

PROMOS FROM YOUR OWN SALES
Get ready-to-run promotion ideas drawn from your sales: what's trending, what's sitting on the shelf, and regulars you haven't seen in a while. Review it, then send.

INVOICES THAT GET PAID
• Send a branded invoice from the job site
• Lock finished files until the invoice is paid — they unlock the moment it is
• Automatic reminders on unpaid invoices
• A notification the second you're paid

PLANS THAT BILL THEMSELVES
Set up recurring plans for retainers and memberships. Customers sign up from a link, a QR code or Tap to Pay, and every cycle charges itself.

MEMBERS AND CUSTOMERS
Enroll members at the counter and save their card with Tap to Pay. Keep customer history in one place.

THE BACK OFFICE IN YOUR POCKET
See today, this week and this month at a glance. Manage your catalog, bookings, members and closeouts from anywhere — changes sync to your register the moment you save.

NO MONTHLY FEE
Paybrain is free to download and use. You pay only processing on what you collect, with payments powered by Stripe.

Questions? Open a support ticket in the app or email [e-mail].

What’s new

• Ring up sales from your catalog — tap through categories or scan barcodes with your camera
• Take payment with Tap to Pay, cash, or put it on a tab
• Card pricing: card prices on every item, cash customers get the discount automatically
• Draft invoices with AI: describe the job, add photos, review before anything is sent
• Purchase orders: AI reads your sales and drafts the reorder
• Enroll members and save their card with Tap to Pay
Plus fixes and performance improvements.