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For freelancers, contractors and small businesses, invoicing usually happens away from a desk: on a job site, in a car between clients, or at the kitchen table after hours. An invoice generator with a good mobile app lets you create and send the invoice while the work is fresh, attach photos of completed jobs, and see the moment a client opens or pays it.
The basics every tool here covers are creating professional invoices, sending them by email or link, accepting online payments, and tracking what is paid and overdue. The differences lie in what surrounds invoicing: full bookkeeping, time tracking, estimates, client portals and automation for reminders.
We compared mobile app quality, invoice customization, payment options and fees, reminder automation, and whether the pricing makes sense for businesses sending a handful versus hundreds of invoices monthly.
| Tool | Best for | Starting price | Free plan |
|---|---|---|---|
 Zoho Invoice | Free unlimited invoicing for small businesses | Free | Yes |
 Wave | Free invoicing with accounting attached | Free; payment processing fees apply | Yes |
 FreshBooks | Freelancers who want invoicing to feel effortless | See website | No |
 QuickBooks | Businesses that need accounting depth behind invoices | See website | No |
 Xero | Growing businesses with an accountant in the loop | See website | No |
 Square Invoices | Businesses already taking payments with Square | Free; payment processing fees apply | Yes |
 Invoice2go | Tradespeople and field workers invoicing on site | See website | No |
 HoneyBook | Creatives and consultants managing client projects | See website | No |
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The fastest way to get paid is to invoice immediately. Businesses that send the invoice the same day as the work get paid days sooner on average than those that batch billing weekly. A mobile invoicing app removes the excuse: create and send it before you leave the site or close the laptop.
Clarity prevents the disputes that delay payment. Itemize the work in plain language, reference the agreed quote or contract, and show the due date prominently. Clients pay confusing invoices last. Adding photos of completed work, which several of these apps support, answers questions before they become delays.
Payment options matter more than most businesses expect. Invoices with an online pay link get paid faster than those asking for a bank transfer or check. Yes, processing fees cost a few percent, but compare that to the value of cash arriving two weeks earlier and the hours saved chasing payments.
Finally, automate the awkward part. Set polite reminders for three days before due, on the due date, and seven days after, then let the system send them. Consistent follow-up is the single biggest lever on late payments, and automation makes it happen without you dreading the conversation.
We required a real mobile app, not just a mobile website, and tested the core flow of creating and sending an invoice on a phone. We compared template quality, payment options, reminder automation, and pricing against business size. Free options had to be genuinely usable, not trials in disguise.
Solo freelancers sending a few invoices a month should start free with Zoho Invoice or Wave and upgrade only when accounting needs grow. Service freelancers who invoice weekly will appreciate FreshBooks enough to pay for it. Field workers should trial Invoice2go for its on-site workflow.
Businesses that need proper books, payroll or an accountant's involvement should pick QuickBooks or Xero from the start rather than migrating later. Square users stay in-ecosystem with Square Invoices, and client-project businesses get the most from HoneyBook's proposals-to-payment pipeline.
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab has spent more than a decade helping SaaS and e-commerce brands grow through search. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.