Try it
Start
$0
free to try
For freelancers testing the workflow.
- 5 clients
- 5 projects per 30 days
- Unlimited invoices
- PDF export with LockMargin branding
- AES-256-GCM encryption
- Local-first by default
Download LockMargin for Windows
Is LockMargin free to try? Yes. The Start tier is free to try with up to 5 clients and 5 projects per 30 days, unlimited invoices. No credit card required.
Offline-first financial software for freelancers. Your data stays on your computer. No cloud. No subscription. No account required.
Early Access opens September 2026. Both plans are reserved now; the app ships mid-September.
No account
Your data stays local
Works offline
$49 once
Two plans. Same application.
Both versions use the same LockMargin desktop application. Your plan determines which features are available.
Full ownership
Standard
$49
one-time · yours forever
For freelancers running their business on it.
- Unlimited clients, projects, invoices
- Full PDF / CSV export (no watermark)
- Quotes → Invoice conversion
- Recurring invoices (auto-generation)
- Full time tracking & Expenses
- 8 KPI analytics & 26 financial reports
- Auto-backups + soft delete
- Priority email support (48h)
- Free updates for v1.x (v2.x at 50% off)
Still comparing? LockMargin vs FreshBooks → · vs Bonsai →
Release status
One build, one price, one date that matters.
SEPT 1–15
Early Access
Reserved licenses get the beta build. Feedback shapes the final release.
SEPT 30
Standard Release
Full public release with all features. Same $49, same app.
What you get
Real product capabilities, not marketing tiers.
Invoices
Clients
Projects
Expenses
Time tracking
PDF export
CSV / JSON export
Local encrypted database
Snapshot Billing
System requirements
A desktop app that respects your machine.
Available
Windows 10 / 11 (x64)
~15 MB portable .zip. No installer, no runtime to pre-install, no internet required. Extract and run LockMargin.exe.
Coming Q4 2026
macOS
Apple Silicon & Intel.
Coming Q4 2026
Linux
x64, glibc 2.31+.
Installation
Three steps. No wizard, no account.
Download
Get the .zip archive after Early Access opens (or reserve your license now).
Extract and run
Unpack to any folder and run LockMargin.exe. The app launches immediately.
Start invoicing
Press Ctrl+K, create a client, send your first invoice. Your data never leaves the machine.
Questions
Can I download LockMargin right now?
Early Access opens mid-September 2026. Until then you can reserve Start (free) or Standard ($49 once) — both ship in the September window. No fake countdowns, no spot limits.
Is there an installer?
No. LockMargin is a portable .zip archive. Extract it and run LockMargin.exe — no setup wizard, no registry writes, no admin rights required.
What are the system requirements?
Windows 10 or 11, 64-bit. About 15 MB on disk. No internet connection required to run, invoice, export, or back up.
Does Start really cost nothing?
Yes. Start is free to try: 5 clients, 5 projects per 30 days, unlimited invoices, PDF preview. No account, no trial timer.
What do I get with Standard?
Unlimited everything, full PDF/CSV export, recurring invoices, expense tracking, reports, auto-backups, and priority support. $49 once — yours forever.
What about macOS and Linux?
Coming Q4 2026. Windows ships first because that is where the Early Access build is stable. We will not claim a platform before it exists.
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Own the software your business depends on.
No subscription · No account required · Your data stays yours forever