Free, offline-first point-of-sale. Optionally syncs sales to Nefin Bookkeeping for full double-entry posting.
macOS: macOS will say "Nefin POS is damaged and can't be opened." It isn't — that's Apple's generic message for unsigned apps. Open Terminal and run:
xattr -cr ~/Downloads/nefin-pos-*.dmg # then open the .dmg and drag Nefin POS to Applications
Or, if you've already installed it: xattr -cr /Applications/Nefin\ POS.app
Windows: SmartScreen will say "Windows protected your PC." Click More info → Run anyway.
Linux: chmod +x nefin-pos-*.AppImage && ./nefin-pos-*.AppImage
Apps are unsigned. Once installed, updates are verified against cloud-published latest-mac.yml / latest.yml manifests using SHA-512 hashes — no Apple Developer ID required.