Download Posnic POS

Free forever for local use. No account, no trial clock, no telemetry. The database is bundled — there is nothing else to install.

Version 1.3.0 · released 14 Aug 2026

Beta, and not signed yet — your computer will warn about an unknown publisher. What to do · Checksums

Windows

Windows 10/11 · 64-bit · 159 MB

Download installer

or portable - a single executable with no installer. It still stores application data in your user profile unless you deliberately configure another user-data directory.

macOS

Apple Silicon (M1 and later) · 532 MB

Download for Apple Silicon

Intel Mac · zip for Silicon or Intel
Apple menu → About This Mac tells you which.

Linux

x86_64 · 215 MB · no install needed

Download AppImage

or .deb for Debian and Ubuntu — sudo apt install ./posnic_1.3.0_amd64.deb

Free means local edition

No trial clock and no Posnic account are required for the local desktop edition. Cloud sync, managed off-site backup and remote dashboards are optional services.

Database included

The desktop package includes its local database and API. Keep a tested backup away from the till because local data is your responsibility.

Download clicks measured

The buttons emit a consent-aware GA4 download_click event by platform and file type. GitHub asset requests are measured separately and are not treated as installations.

Verify the exact file before you run it

The release workflow publishes a SHA-256 list for all eight installable v1.3.0 packages. A matching SHA-256 proves that your file has the same bytes as the published release asset. It does not prove that the software is safe, suitable for your shop or approved by your device policy.

Record the exact file name, operating system, processor architecture and published byte size.
Compute the full local SHA-256. On Windows use Get-FileHash -Algorithm SHA256 "path-to-file"; on macOS use shasum -a 256 "path-to-file"; on Linux use sha256sum "path-to-file".
Compare all 64 hexadecimal characters, retain the result, then test with synthetic data and a clean profile before using business records.

Open SHA-256 list Download package facts JSON

Download the blank 20-control verification record

The record starts with every observation, evidence, owner, review, pass/fail and follow-up field blank. Microsoft documents Get-FileHash; platform warnings still require a separate security decision.

If your computer warns about an unknown publisher

The warnings are accurate. The Windows files in v1.3.0 are unsigned, and the macOS files are signed but not notarized. Verify the source and full checksum before making a separate security decision.

Windows. SmartScreen uses reputation information and warns when an app is not well known. If your device policy permits the file after verification, the dialog offers More info and Run anyway. On a managed computer, follow the administrator's decision. Read Microsoft's current App & browser control guidance.

macOS. Try to open Posnic once, then open System Settings > Privacy & Security. If you have verified the file and choose to continue, use Open Anyway and confirm. Apple warns that overriding this protection can expose the computer to malware; read Apple's current safe-app guidance. Do not remove the quarantine attribute with a terminal command.

Start from this canonical page or its linked GitHub release and check your file against SHA256SUMS.txt before installing. Keep your own backups because this beta can hold sales records.

Inspect and build the pinned source

The whole application is AGPL-3.0 open source. The public v1.3.0 artifacts are built from the release tag by the repository's release workflow. Pin the source input before installing dependencies:

git clone --branch v1.3.0 --depth 1 https://github.com/Posnic/POS.git
cd POS
git rev-parse HEAD  # expect b531ef4308c4dc3a25f250551a54fc5616e3b8d9
npm ci
npm --prefix frontend ci
npm --prefix api ci
npm test

A complete installer also needs the platform-specific bundled MongoDB and packaging preparation. Follow the pinned release workflow. The successful v1.3.0 release run checked out the tag at the reviewed commit in its Windows, macOS, Linux and publish jobs. A local build is not assumed to be byte-identical to the published artifact because the runner, dependencies and packaging environment also matter. Inspect the reviewed source commit.

Already subscribed to Posnic Cloud?

Install on any machine, then in the setup wizard choose I have a Cloud account and sign in with your Posnic email and password. Your whole shop downloads automatically — items, customers, sales history and your login.

Not a subscriber? Choose Community Edition. It is free forever and you can move to Cloud later without losing anything.

All releases, checksums and release notes are on GitHub. Problems? See Support for the current contact and escalation paths.

Download questions

Is Posnic POS really free to download?

Yes. The local desktop edition is AGPL-3.0 open source with no trial clock. Optional cloud sync, managed backups and remote dashboards are separate paid services.

Which operating systems can run Posnic?

v1.3.0 publishes Windows x64 installer and portable files, macOS builds for Apple Silicon and Intel, and Linux AppImage and Debian packages.

Does the Windows portable build leave data on the computer?

The file needs no installer, but Posnic still creates application data in your user profile unless you deliberately configure another user-data directory. Portable does not mean stateless.

How can I verify a Posnic download?

Choose the exact operating-system and architecture file, then compare its full local SHA-256 with SHA256SUMS.txt. A matching hash proves byte identity with the published asset, not safety or shop suitability.