Invoicing and billing apps for freelancers

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Activity signals, not revenue.

1. 41Invoice Maker, Estimates Easy0★4 molivecommercialFree mobile invoicing app for small business owners to create, send, track, and customize invoices, estimates, receipts, and quotes.
2. 42Invoice Maker: Estimate PDF0★3 moliveBilling app for freelancers and small businesses to create invoices and estimates, send PDFs, and track payment status.
3. 43Invoice & Receipt Maker: Smart0★5 molivecommercialApp for designing and sending invoices, tracking payments, and generating financial reports with sync and backup.
4. 44Invoice Maker, Billing, Quotes0★21 daysliveAll-in-one iOS invoice manager with estimate builder, client management, and item inventory for small businesses.
5. 45Invoice Mama - Invoice Maker0★3 molivecommercialFast invoicing app for contractors and freelancers to create and send invoices, estimates, and receipts from a phone with one-tap conversions.
6. 46ProBooks: Invoice Maker0★4 molivecommercialInvoice and expense manager app that creates branded, customizable invoices, converts estimates to invoices, and tracks cash flow helps small businesses bill quickly.
7. 47Invoice Maker ™0★4 molivecommercialInvoice generation app for small businesses to create, send, and track invoices with customizable templates and payment monitoring.
8. 48Freebie Invoice Maker0★23 dayslivecommercialInvoicing app that lets users create and send invoices, estimates, and receipts, track payments, and manage expenses for small businesses.
9. 49Invox - Invoice Maker Estimate0★7 mostaleliveInvoice maker app with voice input and manual entry, allowing users to create, send, and track invoices, accept payments, and get notified, with a premium tier.
10. 50InvoicePro310★2 moliveai-builthobbyInvoicing app for creating, sending, and managing invoices for small businesses or freelancers.
11. 51Simple Invoice Maker0★4 molivecommercialInvoicing app that creates and sends invoices with customizable templates, taxes, discounts, and client management for freelancers and small business owners.
12. 52Invoice Maker – BizLedger0★7 mostalelivecommercialInvoicing app that helps freelancers and small businesses create and send invoices and quotes, manage customers, and track expected revenue and payment statuses.
13. 53Invoice Maker & Quote - Simple0★1 yrabandonedlivecommercialInvoicing app for freelancers and small businesses that creates invoices and quotes, turns accepted quotes into invoices, collects e-signatures, and tracks earnings.
14. 54Simple Invoice & Receipt Maker0★2 yrabandonedlivecommercialApp that lets users create and manage invoices, estimates, and receipts with payment tracking and client management.
15. 55Invoice Maker゜- Create Invoice0★5 yrabandonedlivehand-codedInvoice maker app for creating and sending professional invoices, quotes, and estimates, tracking payments, and sending payment reminders.
16. 56Invoice Maker Flex0★13 daysliveTeam-oriented mobile invoice app for small businesses to create, share, and track invoices and estimates across devices.
17. 57InvoiceNow: Easy Invoice Maker0★5 molivecommercialInvoicing app that generates invoices and estimates, accepts card payments, tracks expenses, calculates tax refunds, and syncs data across devices.
18. 58Invo: Invoice Ai Invoice Maker0★5 moliveInvoice and billing app for small businesses to create, send, and manage invoices, estimates, and receipts with payment tracking.
19. 592Go - Invoice Maker & Estimate0★5 molivecommercialInvoicing app for freelancers and small businesses that creates receipts, invoices, and quotes, calculates taxes and discounts, and shares documents.
20. 60O&G E-Stamp and Signature0★5 molivecommercialBusiness app that codes, stamps, and signs invoices and tickets electronically, then emails copies to suppliers.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.