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About

Instant Invoice is a free online invoice generator built for freelancers, contractors, and small businesses who need to create and send professional invoices without the hassle of complex accounting software. Create polished invoices in seconds with no signup required. Fill in your details, add line items, taxes, and discounts, then download as a PDF or send directly to your client. Support for 50+ currencies makes it ideal for international billing. Choose from professionally designed templates across Business, Freelancer, Tech, Healthcare, and more — available in PDF, Word, and Excel formats. Need it even faster? Use the AI Invoice Generator — simply describe your invoice in plain English and get a ready-to-download PDF instantly. Upgrade to Pro at just $7/month for unlimited invoices, payment buttons, client management, and revenue tracking. Or grab a one-time credit pack from $1 — no subscription needed.

About

An open source web application meant to help manage and create invoices in a simple, straightforward way. It does only one thing, but does it very well. Everything is placed where you are expecting to find it. Manage invoices with different serial numbers. Save drafts of your invoices and continue editing them later. Obtain printable PDF versions of the invoices, with a professional look. Automatically generate invoices on a periodic basis. Bill from any internet connection-enabled place. Manage customers and invoices programmatically directly from your application. It has a growing community of developers continuously working on new features.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Freelancers & independent contractors Small business owners Agencies & consultants Service-based professionals (designers, developers, photographers, etc.) Startups needing lightweight invoicing without accounting software

Audience

Companies searching for a solution to manage and create invoices

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

$7
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Instant Invoice
Founded: 2025
United Kingdom
www.instantinvoice.io

Company Information

Siwapp
Germany
www.siwapp.org

Alternatives

Alternatives

Invoigin

Invoigin

Vayns
Brisk Invoicing

Brisk Invoicing

Brisk Cloudware
xpdInvoice

xpdInvoice

xpdoffice
Hitech BillSoft

Hitech BillSoft

Hitech Digital World

Categories

Categories

Billing and Invoicing Features

Billing Portal
Contact Database
Contingency Billing
Customer Portal
Customizable Invoices
Dunning Management
Hourly Billing
Invoice History
Mobile Payments
Multi-Currency
Online Invoicing
Online Payments
Payment Processing
Project Billing
Recurring/Subscription Billing
Service Ticket Billing
Tax Calculator

Integrations

No info available.

Integrations

No info available.
Claim Instant Invoice and update features and information
Claim Instant Invoice and update features and information
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Claim Siwapp and update features and information