OSPOS is a free, open-source point-of-sale app that turns your iPhone into a full POS system. Accept cash. Accept cards. No monthly fees. No contracts.
Every other POS charges you monthly, plus per-transaction fees, plus hardware costs, plus add-on fees. We charge nothing for cash and 1% for cards. That's it.
Cash-only POS with menu builder, order tracking, daily summaries, and CSV export. No account needed. No internet required. Works completely offline. Zero dollars, zero catches.
Accept tap, chip, and swipe payments through Stripe. Stripe charges its standard 2.7% + 5¢ per in-person transaction — and OSPOS adds a separate 1% on top. That's the whole deal. No monthly fees, no minimums, no hidden charges.
Download, build your menu, start selling. Card payments take five minutes to enable with Stripe. No hardware required — Tap to Pay on iPhone works right out of the box.
All data stored locally on your device. We never see your sales data unless you opt into cloud sync. No card numbers ever touch our servers. Open source — audit the code yourself.
Items with stickers, categories, and modifier groups. Customers customize, you ring fast.
Choose-your-milk, add-toppings, no-onions. Required vs optional, single vs multi, defaults that pre-fill the customize sheet.
86 an item or modifier mid-shift with one tap. Hides from the order grid without deleting. Toggle back when you restock.
Percent off or dollar off, with an optional reason like “Happy hour” or “Birthday comp.” Math handles taxable items correctly.
Optional category filter strip above the order grid for menus with 20+ items. Coffee, sandwiches, tacos — filter and ring fast.
Hand-curated icons across Food, Drinks, Retail, and Service. Search “lettuce,” “pickle,” “iced coffee” — find the right visual instantly.
Accept contactless cards with just your iPhone. No reader needed. Uses Apple's built-in NFC.
Stripe Connect Standard — your merchant account is yours, not a sub-account we control. Daily payouts straight to your bank, no vendor lock-in.
Daily summaries, date-range reports, and CSV export. Know exactly how your business is doing.
Cash register works with zero internet. Sell anywhere — no WiFi, no cellular, no problem.
Email receipts to your customers. Clean, branded, professional.
Get notified of chargebacks and submit evidence directly from the app.
The numbers speak for themselves.
Card payments are processed by Stripe, which charges its own standard 2.7% + 5¢ per in-person transaction. OSPOS adds a separate 1% on top — and never a monthly fee. Cash sales are always free.
Take orders fast, rain or shine, with or without WiFi.
From farm stands to flea markets. Set up in a minute, sell all day.
Small stores that need a register, not a $800 terminal.
Barbers, cleaners, tutors. Charge clients on the spot.
v1.1 shipped to the App Store mid-June with real modifiers, QSR mode, 86’d toggles, and 193 stickers. On June 30 the entire codebase goes public under AGPL-3.0 — auditable, forkable, self-hostable.
Build modifier groups per item — milk, size, add-ons — with required or optional choices, single or multi-select, and upcharges. A customize sheet pops up the moment you ring it in, and any cart line stays editable.
Flip on a category strip above the grid so big menus filter by Coffee, Sandwiches, or Pastries in a tap. It stays hidden for simple menus — no clutter for the coffee cart.
Sold out? Hide an item from the order grid the second you run out, then flip it back when you restock. No deleting, no rebuilding your menu. Order-level discounts and comps land too.
The sticker library jumps from 46 to 193 icons across Food, Drinks, Retail, and Service, with a full-screen picker, search, and category tabs so every item on your grid is recognizable.
June 30: repo flips public at github.com/pzapzap/ospos under AGPL-3.0. Audit it, fork it, self-host it. Hosted version stays on the App Store at 1% on cards.
OSPOS v1.0 is out today. Download it, build your menu, and ring up your first sale. Free forever for cash. Just 1% for cards. No signup required.