Add a branded invoice tool to every client site.
InvoiceHarbor is a single-file invoice and quote app you can white-label, host and hand to clients. No backend, no subscription, no per-client fees — one $149 license covers unlimited client deployments.
Editable source · White-label · Unlimited client deployments · No resale of source
One-time license
For agencies, freelancers and web designers.
- Unlimited client deployments
- Editable HTML, CSS and JavaScript
- White-label name, logo, colors and links
- Documentation and 3 months of support
- No backend, hosting or subscription
After payment, email your Wise reference to khshvmas92@gmail.com. We send the agency ZIP, license and documentation by email.
Why agencies use it
A useful add-on, without another platform to manage.
Your clients get a private invoice and quote tool. You get a one-time asset you can brand and deploy without running a SaaS, storing documents or charging a subscription.
Offer it as a client add-on
Install a branded invoice page on a client site and charge for setup, customization or hosting. You keep what you charge for your services.
Private by default
No account, no upload and no document data sent to a server. Client data stays in the browser, which is an easy privacy story to tell.
One file to deploy
Drop it on any static host, attach it to a client portal, or hand the file to the client. There is nothing to install or maintain on your side.
Simple math
One license. Many deployments.
The agency license is a one-time $149. If you charge a client $150 for setup and branding, the first deployment covers the license. The rest is your service revenue. This is an example, not a promise of income.
| Agency license (one-time) | $149 |
| Example client setup fee | $150 |
| Example balance after first client | +$1 |
| Additional client deployments | $0 license fee |
Illustrative amounts only. You set your own client pricing. The license allows unlimited client deployments; it does not allow reselling the source code.
What's included
The whole product, not a subscription.
- Complete single-file app: quotes, invoices, clients, tax, discounts, themes, logo upload, JSON backup and print/PDF.
- Editable source and written documentation.
- White-label rights for your agency or client branding.
- Unlimited client deployments; no per-seat or per-client fee.
- 3 months of email support for installation and defects.
Want to try it with one client first?
Email us with the client project and we can arrange an evaluation copy for one deployment before you buy the agency license.
Questions
Agency license FAQ.
How many client sites can I deploy it on?
The agency license allows unlimited client deployments. You can install it on as many client sites as you like; the only restriction is that you cannot resell the source code itself.
Can I remove InvoiceHarbor branding?
Yes. You get the editable HTML, CSS and JavaScript, so you can replace the name, logo, colors and links with your agency or client branding.
Do I need to host a backend?
No. InvoiceHarbor is a single HTML file with no backend. It runs in the browser, stores data in the browser's local storage, and can be hosted as a static file.
Can I try it with one client first?
Yes. Email us and we can arrange an evaluation copy for one client project before you buy the full agency license.
How is payment handled?
Pay $149 by Wise. After payment, email the Wise reference and we send the agency ZIP, documentation and license by email.
What is not included?
Custom development, ongoing maintenance and hosting are not included. The license also does not allow reselling or redistributing the source code as a competing product.