03Mobile applications

Made for the thumb, used every day.

Mobile-first products and custom mobile experiences — for customers who decide on the move, and for owners whose decisions can’t wait for a laptop. We recommend an app only when a mobile-first website won’t do the job.

HatalyX conceptOn this page: a HatalyX concept app with fictional data — no client app is shown — and live mobile-first websites: Sushi Box, the Ari Zona e-menu, Iregi Fatelep.

  1. Today, at a glance

    One decision waiting, projects in progress, the day’s tasks.

  2. AI summarises, a person decides

    Summaries are drafted by AI and checked by a person before anyone acts on them.

  3. Approve on the spot

    The offer, what changed, and two clear choices.

HatalyX conceptA companion app HatalyX designed for itself to explore the pattern. Fictional placeholder data — not client work. No client app is shown on this site.

What it solves

When business happens on a phone.

Five situations where the phone decides — and, for each, where our answer is live, or that it is shown as a concept.

  1. Your customers find you on a phone — and the site was made for a laptop.

    Products designed for the phone first, then scaled up to larger screens.

    Sushi Box — 8 categories and 74 items, built for the phone

  2. Ordering takes too many taps.

    One tap to call, or a ready-written order in a messenger.

    Sushi Box — call the shop or send a ready-written Viber order

  3. Guests squint at a paper or PDF menu.

    A menu made for the guest’s phone: search, categories, photos and a basket.

    Ari Zona e-menu — UA · HU · EN, search and a basket

  4. Decisions wait until someone is back at a laptop.

    A companion app for daily decisions: approvals, tasks and summaries.

    Shown as a HatalyX concept, with fictional data

  5. You’re not sure you need an app at all.

    A straight recommendation: often a mobile-first website does the job for less.

    Part of the free first consultation

What we build into it

What goes into a phone-first product.

The format follows the job: a mobile-first website, an installable web app or a native app. Your offer names which one, and why.

Mobile-first websites

  • Layouts designed for the thumb first
  • Fixed call, order and booking bars
  • Bottom tabs for the sections people use most
  • Search, categories and a basket
  • Light pages and images for mobile data

Companion apps

  • A daily overview: what’s waiting, what’s next
  • Approvals with a clear history
  • Tasks and reminders
  • AI summaries, checked by a person
  • Notifications — when in scope

Choosing the format

  • Mobile website, installable web app or native app — chosen per project
  • One back end shared with your website or system
  • Ukrainian, Hungarian and English interfaces
  • Testing on real phone screen sizes
  • App-store publishing — when a native app is in scope

Example interface

The Ari Zona e-menu, read closely.

A restaurant menu that lives on the guest’s phone. It is a mobile-first website, not an app — and it does an app’s job at the table.

Ari Zona e-menu on a phone: the carved wood and gold identity, a home-delivery note, the phone number, a UA · HU · EN switch, Food and Drinks, and search.
The breakfast category on a phone: dishes with photos, portions and prices in hryvnias, one dish added, the basket showing 3.
The menu’s bottom tabs: Menu, Events, About us and the basket with 3 items.
Real client work ari-zona-e-menu.vercel.app · a mobile-first website in Ukrainian, Hungarian and English — not a native app.
  1. Its own identity, three languages

    Wood and gold taken from the restaurant itself; Ukrainian, Hungarian and English one tap apart.

  2. Dishes with photos, prices and a basket

    Each dish with its photo, portion and price; one tap adds it to the basket.

  3. Tabs under the thumb

    Menu, events, about the restaurant and the basket — always at the bottom of the screen.

In the work

Live on phones, built as websites.

Our real phone-first work is mobile-first websites, not native apps. Open them on your phone — nothing to download.

Sushi & street food · Vylkove, Ukraine

Sushi Box

Ordering built for the phone: 8 categories, 74 items, dish sheets with weight and composition, and one tap to call or send a ready-written Viber order.

  • Mobile-first website
  • Ordering
  • UA · EN
Read the case study

Restaurant menu · Gat, Zakarpattia

Ari Zona e-menu

A menu on the guest’s phone in three languages: food and drinks, search, categories, dishes with photos and a basket.

  • Mobile-first website
  • Menu & basket
  • UA · HU · EN
Read the case study

Timber & firewood yard · Iregszemcse, Hungary

Iregi Fatelep

A catalogue that works in the yard: sizes and gross prices on the phone, with a fixed bar to call or jump to timber or firewood.

  • Mobile-first website
  • Call bar
  • HU
Read the case study

Real client workHatalyX concept

These three are mobile-first websites. No native app is shown here: HatalyX has not released a client app yet, so the app above is a concept with fictional data. When a project needs a native app, the offer says so — and why.

All work

How the work goes

From first conversation to launch.

Five steps, the same for everything we build. You know what you get, for how much and when — before any work starts.

How projects are scoped and paid
  1. 01

    Consultation

    We get to know your business and your goals. A short conversation shows what you need — and what you don’t.

  2. 02

    Offer & plan

    A detailed offer and plan: exactly what you get, for how much, and when.

  3. 03

    Design & development

    We design and build the system and keep you informed along the way — no black boxes.

  4. 04

    Testing & approval

    We test on key screen sizes and modern browsers, fix what we find, and prepare the launch with your approval.

  5. 05

    Launch & support

    We launch, train you to manage it, and stay close afterwards — one message, and we help.

Other services

The rest of what we build

All services, side by side
  • Websites

    Corporate, catalogue, hospitality and ordering sites — built around how customers decide.

  • Web applications

    Booking engines, portals, admin panels and tools that run in the browser.

  • CRM & business systems

    Customers, requests, projects and documents — one place for the team to work.

  • Commerce & booking

    Catalogues, price lists, ordering, reservations and availability.

  • AI & automation

    Automations and AI-assisted drafts — with a person making the decisions.

Start a project

Have something in mind? Let’s build what your business actually needs.

A free, no-obligation conversation. Tell us about the business — we’ll recommend only what is worth building.