Invoice App for Small Business

Keep invoicing close to the work — not the weekend.

Small businesses lose cash flow days when invoicing is treated as a separate office job. InvoiceSonic is a mobile app that lets the owner create and send the invoice from the phone or browser the moment the work is complete, while saved customers, real-time notifications and payment tracking keep the growing invoice list organised. Every invoice carries your business logo, the correct tax and clear payment instructions — and because InvoiceSonic is not a payment processor, none of your money is skimmed on the way in.

Owner-operated billing · Mobile and web · Three invoices a month free · No signup for the first

Made for a short admin loop — Finish the job, create the invoice, state how to pay and keep the balance visible. No accounting implementation project required.

Create your invoice here — free

Enter the actual job details, review the totals and preview your invoice. You can start without an account. Downloads follow the free-tool limits; saving, tracked sending and reminders are available with an account.

Create your invoice online

Your business
Bill to (client)
Invoice details
Line items
Description Qty Unit price Tax %
Totals
Payment details
Notes
Open interactive editor

What you get

Invoice on site, in a few taps

Use the iPhone and iPad app or any mobile browser so the request for payment goes out while the job details are current. Owners who invoice the same day get paid faster than those who batch it up for Friday.

Saved customers and line items

Reuse contact details and regular line items to cut typing and inconsistent descriptions. Invoice creation for a repeat customer takes seconds, every time, and the whole invoicing process stays in one place.

Your business logo on the invoice

Add your logo, tax identifier, payment terms and payment details once; each invoice after that matches. Invoice totals, tax and due dates calculate automatically.

Online payments — credit cards or free rails

Put bank transfer, PayID, Venmo, Zelle, Cash App or PayPal on the invoice. Customers who prefer credit cards can pay through those; customers who prefer a free rail pay you in full. InvoiceSonic itself never takes a percentage of either.

Real-time notifications and cash flow visibility

See in real time which invoices have been sent, opened, paid or allowed to pass their due date. "I never received it" stops being a reason not to pay.

Automatic payment reminders

Overdue invoices trigger polite automatic reminders on the schedule you set, so late payments keep moving even during the next busy workday — without you drafting the awkward email.

Recurring invoices for repeat customers

Schedule recurring invoices for maintenance contracts, retainers and subscriptions. Set it once and it bills itself.

How it works

  1. 1

    Save the business basics

    Set your identity, logo, tax details and preferred payment instructions once.

  2. 2

    Create the invoice at completion

    Choose the customer, add the work and materials, check the total and set a due date — all from a mobile device if that is where you are.

  3. 3

    Track the receivable

    Send the invoice and monitor it from the same mobile or web account until payment is recorded. Reminders handle the follow-up.

Send the next invoice today

Create it from the job, office or kitchen table and give the customer a clear way to pay.

Create a small-business invoice

Frequently asked questions

What should this kind of invoice app do?

It should make professional invoices quickly, save repeat details, work properly as a mobile app, show clear payment instructions, send payment reminders and keep unpaid balances visible. Recurring invoices matter once volume grows. Owners rarely need a full accounting ledger for any of that.

How does it compare with Zoho Invoice or Square?

Zoho Invoice is the most generous free invoicing software if you accept more setup and the Zoho ecosystem. Square Invoices suits businesses already taking card payments through a Square reader, at a percentage per payment. InvoiceSonic is lighter: a no-signup first invoice, a native iPhone app, and free payment rails with no cut taken.

Can I use the app without accounting software?

Yes. InvoiceSonic works as a focused invoicing system. You may still use a bookkeeper or separate accounting tool for tax, payroll, reconciliation and financial statements.

Does it work for trades and consultants?

Yes. Bill labour, materials, quantities, fixed jobs, deposits or recurring work, with tax and totals calculated on the invoice.

Can customers pay without card fees?

Yes. Show bank transfer and supported local payment details directly on the invoice. That gives customers a fee-free option instead of forcing every payment through a card processor and its payment gateways — while still letting those who want credit card payments use PayPal or Square.

How much does InvoiceSonic cost?

The free plan covers up to three invoices per month with no card required. Pro is A$19/month and adds unlimited invoices, saved workflows, open tracking, recurring billing and reminders.