Compile North · Guide
How to create a PDF invoice offline on Windows
An invoice needs to be clear enough that your client can see what they are paying for, when it is due, and how the amount was calculated. You can prepare that file on your PC without sending the invoice details to a web service.
Offline Invoice Maker is a free Windows app from Compile North. It saves your invoices locally and exports a PDF to a folder you choose.
1. Add your business and your client
Enter the business name that should appear on the invoice. Add an address, email and phone if your client needs them. Choose a three-letter currency code, such as USD, EUR or INR.
Then enter the client's name, address and email. Review these details before exporting. The app does not verify a company's legal name or tax registration.
2. Set the dates and invoice number
Use YYYY-MM-DD for the invoice date and optional due date. For example, an invoice dated 2026-10-29 could have a due date of 2026-11-05.
Leave the invoice number blank to use the next unused number, such as INV-0001. You can enter your own reference instead. Duplicate numbers are refused.
3. Describe the work
Add a description, quantity and unit price for each line. Use a decimal point in numbers. The app supports up to twelve lines on an invoice.
For example, two hours at a unit price of 75 produce a line amount of 150.00. Add a tax percentage only when it applies to your invoice. Confirm the correct rate for your business and client.
The app rounds each line amount to two decimal places before calculating tax. It keeps the precision you enter for a unit price when you reopen a saved invoice.
4. Add a useful note and check the total
Use the note for payment instructions or a purchase-order reference. Review the client, descriptions, currency, dates and final total before saving. This app creates invoices; it does not provide accounting or tax advice.
5. Save the PDF and review it
Choose Save PDF and pick a folder. Open the exported file to check its contents, then print it or share it through your usual email workflow. Long descriptions and notes wrap, and extra pages are added when needed.
The app does not email the invoice or upload it to Compile North.
Free and Pro
The free edition saves five current invoices for one client and exports PDF files. Pro is a one-time unlock at $39.99 for unlimited invoices, more than one client, a logo and custom invoice designs. There is no subscription. Pro was submitted to the Microsoft Store on 1 November 2026 and is not available to buy until certification finishes. Your local Store price may vary.
Where the invoices are kept
Saved invoices are stored under the current Windows user's local app data folder. Exported PDFs stay in the folder you choose. Include these files in your usual backup process.