Freebie Invoice Maker Simple

Review by eFreeware

Invoice Maker Simple is a free Android app from the developer Invoice Generator, built for creating and sending invoices from a phone. It sits in the Finance category and has been installed more than 500,000 times, with a 4.8 average across 19,181 ratings. The pitch is straightforward: make a professional-looking invoice, estimate or receipt without opening a laptop.

What makes it worth a look is the combination of a low barrier and a decent set of controls. The free tier covers five invoices and five estimates a year, and an in-app upgrade lifts that limit. For someone who bills a handful of customers, the free allowance may be enough to run the whole billing cycle from a phone, and that is the main reason to consider it.

Built for billing from a phone

The core job here is turning a finished piece of work into a document a customer can pay. The app generates invoices and bills for products or services, and it can also produce estimates and receipts. Each document can be made as a PDF, so you end up with something you can attach to a message rather than a screenshot or a note.

You can send the invoice while still with the customer. That is the scenario the app is designed around, and it is a sensible one for tradespeople, cleaners, photographers, consultants and anyone else who finishes a job away from a desk. Instead of saving receipts in a drawer and reconstructing the paperwork at the end of the month, the billing happens while the details are still fresh.

Templates, fields and payment terms are all editable, but it is not a full accounting suite. That restraint is the point. If your billing needs are simple, a tool that does the simple thing well is more useful than one that asks you to set up a chart of accounts first.

Customizing what the customer sees

An invoice carries your business name, so how it looks matters. The app lets you customize the template to whatever degree you want, from a light touch to a fuller redesign. Your company logo can go on the invoice templates, which is the detail that makes a phone-made document look deliberate rather than improvised.

The line items are configurable too. Quantity, rate and item number can each be adjusted, which covers the usual ways of charging for work: hours, units, flat fees or a mix. Discounts can be applied to a single item or to the whole total, and tax can be handled the same way, either included in the price or added on top. For anyone billing in a jurisdiction where tax has to be shown separately, that flexibility matters.

Payment terms are part of the setup as well, with options such as 14 days or 30 days. Stating a due date on the document removes an awkward conversation later, and it is the kind of field that separates a proper invoice from a casual request for money. Invoices can also be signed, which may be useful when a customer wants formal confirmation of the work.

Sending, receipts and repeat clients

Once a document is finished, the app offers several ways to get it to the customer. You can email it, send it through messaging apps, or text it, and printing the PDF is an option too. That range covers most of the ways small jobs actually get billed, since not every customer wants an email attachment.

Receipts are handled through a pre-built template, which is handy for businesses that take payment on the spot and need to hand over proof of purchase. Estimates use the same general machinery, so quoting a job and then invoicing it does not mean learning two different tools.

Setting up clients is kept quick by pulling details from your phone's contact list. For anyone with an existing address book of customers, that avoids retyping names and addresses every time a new document is needed. It is a small feature, but it is the sort of thing that decides whether an app gets used or abandoned after the first invoice.

What it takes to get going

The app is free to download, with a free allowance of five invoices and five estimates per year. Beyond that, an in-app purchase unlocks unlimited invoices and estimates. The upgrade is about volume rather than removing distractions.

That structure suits two kinds of user well. Someone who invoices occasionally, such as a landlord or a person with a side project, can likely stay inside the free limit indefinitely. Someone billing weekly will hit the ceiling quickly and should treat the upgrade as part of the cost of doing business, which is a reasonable way to price a tool of this kind.

There is no setup wizard or sequence of onboarding steps, so there is little to say about the first few minutes beyond the fact that the app is designed to get you to an invoice quickly.

The app was released in June 2021 and was last updated in October 2026, so it is a product that has been maintained over a number of years rather than a recent experiment.

Where the app fits in a small business

This is a tool for the billing end of a small operation, not a replacement for bookkeeping software. It creates the document, applies the tax and discount rules you set, and gets it to the customer. What happens after that, in terms of recording income or reconciling accounts, is not covered.

Freelancers and contractors are the clearest fit. They tend to bill per job or per project, they often finish work away from a desk, and they care about the invoice looking credible without spending an evening on formatting. Small business owners with a steady stream of customers fit too, particularly if they want a consistent look across every document they send.

Anyone who needs to produce invoices in bulk, run payroll or manage inventory would be looking at a different class of software. The app is built around one document at a time, made properly and sent promptly, and that is a narrower ambition than a full finance platform.

The case for installing it

Invoice Maker Simple is a focused app that does one job: turning completed work into a professional document and getting it to the customer. The customization options, the tax and discount handling, the payment terms and the logo support are more than you would expect from something free.

If you bill rarely, the free limit may never trouble you. If you bill often, the in-app upgrade is the realistic path, and it is worth checking the price before you commit to the app as your main billing tool.

The 4.8 average across a large number of ratings suggests the approach works for a lot of people. My recommendation is for freelancers, contractors and small business owners who want to invoice from a phone without a learning curve, and who value a tidy, customizable document over a broad accounting feature set.