Invoice Rex is a powerful invoicing tool that lets you issue invoices, customize their appearance, and track all your business documents — while syncing seamlessly between all your devices via iCloud. No content is ever stored on our or anyone else's servers.
Beyond invoicing, Invoice Rex helps you track bank statements, cash receipts, storage records, journey logs, and much more — everything your business needs in one place.
Designed for freelancers and small businesses who want a beautiful, native tool — not another web app.
Designed with your comfort in mind — simple to use, yet powerful. A full user guide is always a tap or click away, and support is built right into the app.
Your accounts sync seamlessly across all your devices — Mac, iPhone and iPad — via iCloud. Nothing is stored on our servers. Your data stays yours.
Tailor invoice, bill, and document templates exactly to your brand. Fonts, colors, layouts — make every document look exactly the way you want it.
Written from scratch using Apple's latest technologies. One codebase, one UI — consistent across macOS, iOS and iPadOS, with no feature left behind on any platform.
Track bank statements, cash receipts, storage records, journey logs, and other business documents — all in one organized place.
All sync happens through your own iCloud account. No third-party servers ever touch your business data.
A native experience crafted for Mac, iPhone and iPad — not a web app squeezed into a window.











UctoX 2 was released in 2015 and updated for 10 years. A lot has changed since then — Apple has migrated to a new programming language and UI framework. UctoX 2 is likely to keep working for a long time, but to provide a better experience across all platforms without duplicating every feature, Invoice Rex was built from scratch using the latest Apple technologies — hence the macOS 14+ requirement.
To import your UctoX account, select File → Export for Invoice Rex in UctoX, then choose the option to import from UctoX when adding an account in Invoice Rex.
As Invoice Rex is subscription-based, there is no upgrade pricing. If you purchased UctoX after January 1, 2024, contact us and we will provide you with one free year of Invoice Rex.
If you wish to continue using UctoX 2: if you purchased it via the App Store, reinstall it from the Purchases tab. If you purchased it directly, the latest version is available at software.charliemonroe.net/trial/uctox/latest/.