Get the appInvoices that get
paid faster.
Create, send, and track professional invoices and estimates from your phone. Know the moment a client opens your invoice — and get paid without the back-and-forth.
Send in seconds
Build invoices and estimates from a clean, mobile-first form.
Live read receipts
See the moment a client views your invoice — no more guessing.
Track payment status
Draft → Sent → Viewed → Paid. Always know where you stand.
Estimates → Invoices
Convert an approved estimate to an invoice with one tap.
How Invoiceflint works
Invoiceflint turns invoicing into a few taps on your phone. Create a professional invoice or estimate, send it to your client, and watch its status update in real time — so you always know when to follow up and when to expect payment.
- 1
Create
Build an invoice or estimate from a clean, mobile-first form. Add line items, quantities, rates, and tax — the totals calculate themselves.
- 2
Send
Send a secure link to your client in seconds. They open it in any browser — no app or account required to view, download, or respond.
- 3
Get paid
See the moment the invoice is viewed, track status from Draft to Paid, and send a friendly reminder if the due date passes.
Built for freelancers and small businesses
Invoiceflint is made for people who do the work and bill for it themselves — freelancers, contractors, tradespeople, and small business owners. If you’ve ever finished a job and wondered whether your client even saw the invoice, Invoiceflint gives you that answer. No accounting degree, no desktop software, and no monthly fee to get started.
Send an estimate to win the job, convert it to an invoice with one tap when it’s approved, and keep every document organized in one place on your phone. New to invoicing? Start with our step-by-step guides.
Frequently asked questions
- Is Invoiceflint free?
- Yes. Invoiceflint is free to download and use on iOS and Android. You can create, send, and track professional invoices and estimates at no cost.
- Can I send invoices from my phone?
- Yes. Invoiceflint is built mobile-first. You can create an invoice or estimate and send it to a client directly from your iPhone or Android phone in seconds — no computer required.
- How do I know when a client views my invoice?
- Invoiceflint shows a live read receipt: you see the exact moment a client opens your invoice. Its status moves through Draft, Sent, Viewed, and Paid so you always know where things stand.
- Can I turn an estimate into an invoice?
- Yes. When a client approves an estimate, you can convert it into an invoice with one tap. The line items, client details, and totals carry over automatically.
- Do my clients need to install an app to view an invoice?
- No. Clients open your invoice or estimate through a secure link in any web browser. They don't need an account or an app to view, download, or respond.
- Does Invoiceflint work on both iPhone and Android?
- Yes. Invoiceflint is available on the Apple App Store for iPhone and iPad, and on Google Play for Android devices.
- What kind of businesses is Invoiceflint for?
- Invoiceflint is designed for freelancers, contractors, and small business owners who need to send professional invoices and estimates quickly and get paid without the back-and-forth.
Start sending invoices today.
Download Invoiceflint on iPhone or Android and send your first invoice in under a minute.