Compile North · Support
Offline Invoice Maker
Email [email protected]. Include the Windows version and what you expected to happen. Do not attach an invoice that names a real client unless we ask and you agree.
What the free app does
You can save your business details, write an invoice with up to 12 lines, see the total, and save a PDF. The free edition keeps 5 invoices for one client and does not put a logo on the PDF. Dates use YYYY-MM-DD. Leave the invoice number blank to assign the next INV-0001 style number.
What Pro adds
Pro is planned as a one-time unlock at $39.99 in the Microsoft Store, with no subscription. The free app is in the Microsoft Store as of 1 November 2026. The Pro add-on is not released yet. Your local Store price may vary. It removes the 5-invoice limit, allows invoices for more than one saved client, places a logo you choose on the PDF, and unlocks custom invoice designs. Choose Studio, Classic or Bold, a preset or custom color, font, spacing, logo placement, heading and footer. Save your brand default for new invoices and choose whether to show the Compile North credit. The purchase button uses the Microsoft Store price shown on your account. If the upgrade is unavailable, the add-on may still be awaiting release. When it becomes available, use the same Microsoft Store account for purchase and restore. Email support if access is missing after a purchase.
If a total looks wrong
Each line amount is rounded to cents before tax is calculated. Half a cent rounds away from zero. A quantity or price that is not a plain number, such as a thousands separator, is refused. Tax must be from 0 to 100.
If the window starts empty
Saved invoices are in %LOCALAPPDATA%\CompileNorth\OfflineInvoiceMaker\ledger.json. If that file cannot be read, the app keeps a copy beside it and starts with an empty list so the window can still open. The status line shows the copy path.