AI Invoice & Estimate Maker

Review by eFreeware

AI Invoice & Estimate Maker is a business app from HorizonSoft, built for freelancers, contractors and small business owners who want to produce invoices, estimates, receipts and quotes from a phone or tablet. It is free to install, supported by ads and in-app purchases, and it has drawn over 10,000 installs with a 4.3 average from 236 ratings since its release in October 2025.

The reason to consider it is the breadth of the paperwork it covers in one place. Rather than a single-purpose invoice generator, it bundles document creation, a client database, a product and service catalog, payment tracking and a basic analytics view, with a chat-based assistant sitting on top. For someone who currently builds invoices in a word processor or a spreadsheet, that combination is the draw.

Invoices that look like they came from an office

The core job is creating a presentable invoice quickly. The app offers modern, classic and minimal templates plus a receipt layout, and you can add your business logo along with custom colors and branding. Line items, quantities and prices go in as you would expect, and the app handles the arithmetic: taxes are calculated automatically, discounts can be applied, and payment terms and due dates are part of the document.

A few smaller conveniences matter more than they sound. There is an invoice numbering system, so documents stay in sequence, and recurring invoice templates for work you bill on a regular schedule. Multiple currencies are supported, which helps if you invoice clients abroad. Late payment reminders are included as well.

Documents are exported as PDFs, which is what most clients will ask for. The templates are premium and professionally designed, and the range covers both formal and stripped-back looks, so a consultant and a tradesperson can each find something that fits their trade without designing anything themselves.

Quotes first, invoice later

The estimate side is where this app earns its keep for service businesses. You can put together a detailed quote with line items, quantities, prices and tax before any work begins, send it to the client, and then turn the approved estimate into an invoice without rebuilding it. That single conversion step is the difference between a quoting tool and a billing tool, and it is the feature contractors will use most.

Receipts round out the set for transactions that are paid on the spot, and quotes sit alongside estimates as a separate document type. Between the four, the app covers the usual paper trail of a small operation: propose the work, bill for it, acknowledge payment. Unlimited clients, products and services can be added, so the lists are not capped as a business grows.

The assistant and the numbers behind the work

HorizonSoft has built a chat-based assistant into the app, described as handling more than 60 functions that range from creating documents to analytics, all through conversation. It is the headline feature and the one the name leans on. I would treat it as a shortcut layer over the ordinary screens: useful for producing a document or pulling a figure without tapping through menus, and worth trying early to see whether its phrasing suits the way you describe your work.

Underneath that sits the business side. There is a client database, a catalog of products and services, invoice history, and payment status monitoring, so you can see at a glance which invoices are still outstanding. You also get reports on how your business is doing, from which clients and products bring in the most to how payments are trending. None of this is accounting-grade reporting, but for a one-person business it is a reasonable picture of where the money is coming from.

What installing it involves

Setup is a matter of adding your business details, uploading a logo if you have one, and choosing a template and colors for your documents. From there you build out the client list and the product and service catalog, which is the part that takes a little patience up front and pays off afterward, since both feed into every invoice and estimate you create.

The app runs on phones and tablets, and it is built to work offline without an internet connection, so a quote can be written at a client site or a job location where the signal is poor. The developer's most recent update, from February 2026, brings a redesigned interface while keeping the same feature set, so the app should look current if you install it now.

Two things to keep in mind before you commit. The app is free but ad-supported and offers in-app purchases, so you are trading some screen space and the option to spend for the zero price. And the assistant is marketed as revolutionary, which is the kind of claim I would set aside until you have used it on your own documents.

The businesses this suits

This is a fit for tradespeople, consultants, designers and other solo operators who bill clients directly and want the paperwork handled on the device already in their pocket. It suits anyone whose workflow starts with an estimate and ends with a paid invoice, and who would rather keep clients, products and payment status in one app than spread them across files and notebooks.

It is also a reasonable starting point for a small business that has outgrown handwritten receipts but is not ready for full accounting software. The unlimited clients, products and invoices mean there is room to grow into it, and the analytics give a light overview without the complexity of a bookkeeping suite.

Where it is narrower than a full business platform is in scope. If your needs run to payroll, inventory or tax filing, those are separate concerns.

A capable billing companion for solo operators

For the price of a free install, AI Invoice & Estimate Maker covers a lot of ground: four document types, customizable templates with your own branding, automatic tax and discount calculations, estimate-to-invoice conversion, client and product records, payment tracking and a dashboard of revenue trends. The offline support and the phone-and-tablet layout make it genuinely usable away from a desk, which is where a lot of small business billing actually happens.

The trade-offs are the ones that come with a free, ad-supported app with in-app purchases, and an assistant whose billing as revolutionary is best judged against your own documents. The 4.3 rating across 236 ratings suggests most people who have tried it are satisfied, though with only a handful of written reviews there is not much detail to go on.

If you run a service business, quote work before you start it, and want invoices that look professional without a desktop program, this is worth installing and trying on your next job. If your billing needs are already handled by a bookkeeping system, the app's document and tracking features will overlap with what you have.

What's new in version 9.2

Sleek new design, same powerful features.