Linux apps

Small, fast apps for Linux.

Fast, lightweight Linux apps with Rust, Tauri, GTK and Qt — for developers, engineers and embedded devices. Free working prototype in 1 day, then a production release at a fixed price and date.

RustTauriGTK

Get your free prototype 30-min call · no commitment

Tue 21 Oct 9:41

☰Fieldline✕

Line 3 · Press 12

Connected over /dev/ttyUSB0

● Live

Hydraulic pressure, bar172.4

Temperature

48 °C

Cycles / min

Uptime

14 d

Alerts✕

Pressure above 170 barLine 3 · Press 12now

Maintenance completedLine 1 · Press 412 min

Shift report exportedPDF · 2.1 MB1 h

src/monitor.rsAI

#[tauri::command]

async fn read_sensors(port: &str) -> Reading {

let mut dev = Serial::open(port)?;

let frame = dev.read_frame().await?;

Reading::from(frame)

}

Senior review · approved

Pipelinemain

Build
Testspassed
Senior review
Flatpak built
Releaseauto-update

Buildto launch

Day 1Week 1Week 2Week 3Live

Fieldline 1.0 is liveFlatpak, Snap, .deb, AppImagenow

At a glance

One product. One price, one date.

The essentials, before you book a call.

UDEX builds Linux apps for founders and product teams. Fast, lightweight Linux apps with Rust, Tauri, GTK and Qt — for developers, engineers and embedded devices. AI writes the code, tests and CI/CD, while senior engineers own the architecture and review every change.

1 dayFree prototypeNo payment, no commitment

FixedPrice and dateAgreed before we start

100%YoursCode, repository and accounts

Platform: Linux desktop and embedded
Ships to: Flatpak, Snap, .deb or AppImage
Stack: RustTauriGTKQtFlatpak
Quality: Senior review on every change, automated tests, CI/CD

How it works

Idea to production. In three steps.

AI does the heavy lifting. Senior engineers make every decision that matters.

01Day 0
Share the idea
A 30-minute call. We agree on the core flow, the scope and a fixed release date.
02Day 1 → release
AI builds, senior engineers decide
AI writes the code, tests and CI/CD. Senior engineers set the architecture and review every change. Your prototype is ready on day 1.
03Release day
Ship to Flatpak, Snap, .deb or AppImage
The release goes live, and the code, repository and accounts are handed to you.

Who it’s for

Built for founders and product teams.

Here is where it works best, and where it doesn’t.

Engineering tools

Apps for developers, labs and engineers.

Industrial and IoT

Kiosks, HMIs and embedded screens.

Cross-platform products

The Linux version of your desktop app.

Hardware vendors

Apps that talk to devices over serial, USB or the network.

Research and science

Tools for data capture and visualisation.

Teams leaving Electron

Lighter apps that start instantly.

Not the right fit

Mac-only or Windows-only products: see macOS or Windows apps.
Games and 3D engines.
Certified compliance from day one, such as HIPAA or PCI audits.
Open-ended hourly work without a defined first release.

How we work

Six stages, one team.

All services

Pricing

Start free. Ship at a fixed price.

Two steps. The prototype costs nothing, and the release costs exactly what we agree.

Prototype

Free1 day

A working prototype of your core flow to test with users and show investors.

Key screens and the main user flow
Working on real devices and browsers
No payment, no commitment

Get the free prototype

Release

Fixed priceand date, agreed upfront

A production release, shipped to Flatpak, Snap, .deb or AppImage, that you fully own.

Rust, Tauri, GTK and the features agreed on the call
Automated tests, CI/CD and senior code review
Release to Flatpak, Snap, .deb or AppImage and 100% code ownership

Start with a call

Fixed means fixed. No hourly billing and no surprise invoices: anything new is priced before it is built.

Book a call

Thirty minutes. Then your prototype.

Walk us through the idea, and we will scope the core flow and build your free prototype the next day.

Book a 30-min call

FAQ

Questions, answered.

Straight answers about cost, timing, quality and ownership.

How much does it cost to build a Linux app?

The price is fixed for the agreed scope and set before work starts. You first get a free working prototype of the core flow in 1 day, then a fixed price and release date for the production version.

How long does it take to build a Linux app?

A working prototype takes 1 day. The production release date is agreed upfront and depends on the scope; AI speed with senior engineering makes it much faster than classic development.

Which distributions do you support?

Ubuntu, Debian, Fedora and more, packaged as Flatpak, Snap, .deb or AppImage.

Can it run on embedded hardware?

Yes, including ARM boards, with kiosk mode and remote updates when needed.

Can the same app run on Mac and Windows?

Yes. With Tauri or Qt one codebase can target all three desktops.

Is the prototype really free?

Yes, with no commitment. After a 30-minute call we build a working prototype of your core flow in 1 day, and then you decide whether to continue to the release.

Will the price go up during the build?

No. The price is fixed for the agreed scope. Anything new you want to add mid-build is priced separately and built only after you approve it.

Who owns the code?

You do, 100%. The source code, repository and accounts are yours, and the release ships to Flatpak, Snap, .deb or AppImage under your name.

Is AI-written code safe to ship to production?

It ships only after senior review. Senior engineers own the architecture, security and code quality, and automated tests run on every change.

In practice