Frequently Asked Questions

Yes. LockMargin is $49 one-time. No subscriptions, no monthly fees, no recurring charges. You get all features, all future updates for that single payment. The only additional cost is if you choose to buy licenses for additional machines.

Yes. LockMargin is designed as an offline-first desktop application. Your data resides entirely on your machine. You never need an internet connection to create invoices, track time, manage clients, or generate reports. Internet is only required for downloading the application and optional cloud backups.

LockMargin runs on Windows (10+), macOS (11 Big Sur+), and Linux (major distributions). The application is built with cross-platform compatibility from the ground up, ensuring a consistent experience across all operating systems.

LockMargin uses AES-256-GCM encryption to protect your financial data at rest. Since all data stays on your local machine, there are no cloud servers to breach, no third-party data processors, and no shared infrastructure. Your invoices, client information, and business data remain under your physical control.

Yes, LockMargin supports data import from major invoicing platforms including FreshBooks, Bonsai, Harvest, and others. The import process maps your existing client data, invoices, and time entries into LockMargin's local database format.

Yes. LockMargin supports recurring invoices with customizable schedules (daily, weekly, monthly, or custom intervals). Each recurring invoice can have its own template, line items, and client configurations. You get a notification before each recurring invoice is generated.

Snapshot Billing freezes the state of your time entries at the moment you generate an invoice. This means if you edit a time entry after invoicing, the invoice remains unchanged — preventing billing disputes. It's one of LockMargin's signature features that gives freelancers peace of mind.

Yes. LockMargin supports invoicing in any currency. You can set per-client currencies, and the system handles formatting, conversion rates, and reporting across multiple currencies simultaneously.

Yes. LockMargin provides multiple export options including CSV, PDF, and JSON. You can export invoices, time entries, client data, and financial reports at any time. There are no restrictions or extra fees for data export.

LockMargin provides email support for all customers. We also maintain comprehensive documentation, a community forum, and a changelog. As a bootstrapped product, we prioritize direct and personal support for every customer.