LockMargin

Download LockMargin

100% local, offline-first, zero-cloud. Portable archive, no account required.

UI Screenshot: Download Preview
Download LockMargin Early Access

Windows 10+ (macOS & Linux coming in v1.0)

SHA-256: [SHA-256 auto-generated on build]

  • Version Early Access
  • File Size ~15 MB
  • License Proprietary (Free Tier)
  • Updated January 2026

What you're getting

Early Access — Windows Desktop. Invoicing, time tracking, expenses, and financial metrics are stable. macOS, multi-currency, and team features are in v1.0.

We ship what works. We don't ship promises. If you need the missing pieces today, we're not your tool. If you want to help shape them — welcome.

Trusted by early adopters

Getting Started

1

Download the Archive

Click the download button above to get the latest version of LockMargin for your platform.

2

Extract All

Right-click the downloaded .zip file and select "Extract All", or use your preferred archive tool. No admin rights required.

3

Run LockMargin.exe

Open the extracted folder and double-click LockMargin.exe. The app opens to an empty database — no installation needed.

4

Start Working

Use the Command Palette (Ctrl+K / Cmd+K) to navigate. Create your first client, project, or invoice instantly.

System Requirements

Windows

Windows 10 or later (x64). .NET 8 Runtime bundled in the archive.

Coming Soon

macOS

macOS 12 Monterey or later (Apple Silicon & Intel). Expected Q4 2026.

Coming Soon

Linux

x64 Linux with glibc 2.31+ (Ubuntu 20.04+, Debian 11+, Fedora 36+). Expected Q4 2026.

Quick Start Guide

UI Screenshot: Dashboard Preview

First Launch

LockMargin opens to a clean database. Create your first client via Command Palette (Cmd+K → "New Client") or the sidebar navigation.

Import Data

Use the CSV import feature to bulk-load clients, projects, and invoices. Export anytime for backup or reporting.

Set Up Recurring

Define recurring invoices and expenses. The reactive engine handles due dates automatically — no cron jobs or manual triggers needed.

Enable Encryption

Go to Settings → Security to enable AES-256-GCM field-level encryption. Keys are stored in your system keychain.

Start Free. Upgrade When Ready.

The Free tier is free forever with no time limit. When you need recurring billing, encryption, or priority support, purchase a Standard or Professional license.

See Pricing