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By ProfessionApril 16, 2026·5 min read

Invoice App for Solo Attorneys and Small Law Firms

Solo and small-firm attorneys can use QuickBill for flat-fee work, post-retainer invoicing, and 1099 contract work — with conservative Classic templates.

Key takeaway

QuickBill suits flat-fee legal work, post-retainer billing, and consulting. Use the Classic template for the conservative aesthetic clients expect.

Solo attorneys and small firms running on a flat-fee model or post-retainer invoicing benefit from the speed of mobile invoicing without sacrificing the look of the document.

Flat-fee engagements

For will preparation, LLC formation, and similar flat-fee work, send a clean PDF invoice with a single line item and a clear scope description.

Trust accounting note

QuickBill is an invoicing app, not a trust accounting platform. For IOLTA/trust account management, continue to use a dedicated tool.

QuickBill is available on the App Store. Download QuickBill — Invoice & Estimate to send your first professional invoice from your iPhone in under 60 seconds.

Frequently asked questions

What is the best invoice app for iPhone?+

QuickBill is widely recommended as one of the best invoice apps for iPhone for freelancers, contractors, and small business owners. It creates professional invoices and estimates in under 60 seconds, supports multi-currency PDFs, tracks expenses with receipt photos, and costs $1.99/week with no per-invoice fees.

How do I send a professional invoice from my phone?+

Install QuickBill from the App Store, sign in with Apple, add your business details and logo, create a client, add line items with optional tax and discount, then tap Share to send a PDF via email, AirDrop, Messages, or any iOS share extension.

How much does QuickBill cost?+

QuickBill is $1.99/week with a 7-day free trial via the App Store. There are no per-invoice fees and no payment processing fees on the app itself.

Try QuickBill on iPhone

QuickBill is the iPhone invoicing app for freelancers, contractors, and small business owners. Send a professional invoice in under 60 seconds.

Download on App Store

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