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Posnic POS vs Square Point of Sale: catalog facts
Posnic POS	Square Point of Sale
Freemium The local edition is free; optional cloud services are paid.	Freemium Sign-up is open on the website; check Square's pricing page for current plans and fees.
Windows, macOS, Linux, Web	Web
Local edition supports Windows, macOS, and Linux Does not require an account for local use	Payments, orders, inventory and staff scheduling in one system Separate setups for restaurants, retail, beauty and service businesses
Cloud services are optional paid offerings Published runtime evidence covers Windows only	Tied to Square's own payment processing Research does not detail fees or hardware requirements
Downloadable app, Web application	Hosted service
Open source	Closed source
License: AGPL-3.0-only	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.