To simplify that, I built PlainInvoice.com \u2014 a minimal invoicing tool designed for freelancers and small teams. It's clean, fast, and doesn't require sign-up to start.
Some features:
Generate invoices instantly (no login needed)
Save clients, track total billed and actual received (with multi-currency support)
Upload attachments (like receipts or contracts)
Add teammates or accountants with viewer-only access
Works well for solo folks who just want to stay organized without bloat
Here\u2019s a short walkthrough video: https://youtu.be/b3ywvs-8nYM
It\u2019s free to use for now. I built it for myself but figured it might help others too. Would love your feedback or suggestions!"},"title":{"fullyHighlighted":false,"matchLevel":"partial","matchedWords":["invoicing","freelancer"],"value":"Show HN: PlainInvoice \u2013 A minimal invoicing tool for freelancers and small teams"},"url":{"matchLevel":"none","matchedWords":[],"value":"https://plaininvoice.com"}},"_tags":["story","author_5balloons","story_43970241","show_hn"],"author":"5balloons","children":[44043314],"created_at":"2025-05-13T06:55:41Z","created_at_i":1747119341,"num_comments":1,"objectID":"43970241","points":1,"story_id":43970241,"story_text":"Hi HN,\nI'm a freelance developer, and like many others, I used to manage invoices through clunky spreadsheets, reused templates, and endless email threads with my accountant.
To simplify that, I built PlainInvoice.com \u2014 a minimal invoicing tool designed for freelancers and small teams. It's clean, fast, and doesn't require sign-up to start.
Some features:
Generate invoices instantly (no login needed)
Save clients, track total billed and actual received (with multi-currency support)
Upload attachments (like receipts or contracts)
Add teammates or accountants with viewer-only access
Works well for solo folks who just want to stay organized without bloat
Here\u2019s a short walkthrough video: https://youtu.be/b3ywvs-8nYM
It\u2019s free to use for now. I built it for myself but figured it might help others too. Would love your feedback or suggestions!","title":"Show HN: PlainInvoice \u2013 A minimal invoicing tool for freelancers and small teams","updated_at":"2025-05-20T16:21:21Z","url":"https://plaininvoice.com"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"uniqinvoice"},"comment_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["multi","currency","invoicing","freelancer"],"value":"UniqInvoice is a comprehensive invoicing platform designed to simplify financial management for businesses. With features like quick invoice creation, automated billing, payment tracking, and multi-currency support, it streamlines your accounting processes. Seamlessly integrated with Stripe for easy payment processing, UniqInvoice allows you to manage subscriptions, expenses, and more\u2014all from one user-friendly platform. Ideal for freelancers and small to medium-sized businesses."},"story_title":{"matchLevel":"none","matchedWords":[],"value":"[dead]"}},"_tags":["comment","author_uniqinvoice","story_41612039"],"author":"uniqinvoice","comment_text":"UniqInvoice is a comprehensive invoicing platform designed to simplify financial management for businesses. With features like quick invoice creation, automated billing, payment tracking, and multi-currency support, it streamlines your accounting processes. Seamlessly integrated with Stripe for easy payment processing, UniqInvoice allows you to manage subscriptions, expenses, and more\u2014all from one user-friendly platform. Ideal for freelancers and small to medium-sized businesses.","created_at":"2024-09-21T19:19:02Z","created_at_i":1726946342,"objectID":"41612040","parent_id":41612039,"story_id":41612039,"story_title":"[dead]","updated_at":"2024-09-21T20:40:19Z"},{"_highlightResult":{"author":{"matchLevel":"none","matchedWords":[],"value":"ayoolafelix"},"story_text":{"fullyHighlighted":false,"matchLevel":"full","matchedWords":["multi","currency","invoicing","freelancer"],"value":"1. Overview\nInChat Invoice is a WhatsApp bot that enables two users to create, send, confirm, and track invoices directly inside a WhatsApp chat.\nThe bot reduces friction in informal commerce (freelancers, small vendors, service providers, peer-to-peer transactions) by eliminating the need to switch to separate invoicing apps.\nUsers can generate structured invoices through natural language or command-based prompts, and the bot formats and delivers them instantly within the chat.
2. Problem Statement\nMillions of transactions happen over WhatsApp daily, especially in markets like Nigeria, India, Brazil, and Southeast Asia.\nCurrent pain points:\nInvoices are sent as screenshots or PDFs from external apps.\nNo structured format.\nNo automated payment tracking.\nNo simple way to confirm payment inside chat.\nNo lightweight solution for informal businesses.\nThere is no native WhatsApp invoicing feature for peer-to-peer use.
3. Goals & Objectives\nPrimary Goals\nEnable invoice creation inside WhatsApp\nDeliver structured, professional invoice messages\nTrack invoice status (Sent, Viewed, Paid, Overdue)\nMinimize friction (\u2264 60 seconds to generate invoice)\nSecondary Goals\nEnable payment confirmation\nExport invoice as PDF\nProvide payment link support (Paystack, Flutterwave, Stripe)\nNon-Goals (v1)\nFull accounting system\nTax filing automation\nInventory management\nMulti-user ERP features"},"title":{"matchLevel":"none","matchedWords":[],"value":"WhatsApp Invoice Bot"}},"_tags":["story","author_ayoolafelix","story_47062698","ask_hn"],"author":"ayoolafelix","created_at":"2026-02-18T16:23:40Z","created_at_i":1771431820,"num_comments":0,"objectID":"47062698","points":1,"story_id":47062698,"story_text":"1. Overview\nInChat Invoice is a WhatsApp bot that enables two users to create, send, confirm, and track invoices directly inside a WhatsApp chat.\nThe bot reduces friction in informal commerce (freelancers, small vendors, service providers, peer-to-peer transactions) by eliminating the need to switch to separate invoicing apps.\nUsers can generate structured invoices through natural language or command-based prompts, and the bot formats and delivers them instantly within the chat.
2. Problem Statement\nMillions of transactions happen over WhatsApp daily, especially in markets like Nigeria, India, Brazil, and Southeast Asia.\nCurrent pain points:\nInvoices are sent as screenshots or PDFs from external apps.\nNo structured format.\nNo automated payment tracking.\nNo simple way to confirm payment inside chat.\nNo lightweight solution for informal businesses.\nThere is no native WhatsApp invoicing feature for peer-to-peer use.
3. Goals & Objectives\nPrimary Goals\nEnable invoice creation inside WhatsApp\nDeliver structured, professional invoice messages\nTrack invoice status (Sent, Viewed, Paid, Overdue)\nMinimize friction (\u2264 60 seconds to generate invoice)\nSecondary Goals\nEnable payment confirmation\nExport invoice as PDF\nProvide payment link support (Paystack, Flutterwave, Stripe)\nNon-Goals (v1)\nFull accounting system\nTax filing automation\nInventory management\nMulti-user ERP features","title":"WhatsApp Invoice Bot","updated_at":"2026-03-05T23:35:10Z"}],"hitsPerPage":20,"nbHits":3,"nbPages":1,"page":0,"params":"query=multi+currency+invoicing+freelancer&advancedSyntax=true&analyticsTags=backend","processingTimeMS":23,"processingTimingsMS":{"_request":{"queue":19,"roundTrip":24},"fetch":{"query":20,"scanning":1,"total":22},"total":23},"query":"multi currency invoicing freelancer","serverTimeMS":42}