VulCode

Mobile app development in Kraków

VulCode, a software house from Kraków, builds mobile apps for companies in and around Kraków. We write them in React Native or Flutter, so iOS and Android share one codebase, and we handle the App Store and Google Play release. For the first talk we come to your company or meet online, and the free quote comes back within an hour.

from PLN 7,999

The figure for your scope comes in a free quote.

Apps in our portfolio
An end-to-end encrypted chat in the Plazer phone app
Buying a Minecraft server in the Flaem app: plan, server type, billing period and BLIK payment

One codebase, native or a web app?

We usually write a business app from one codebase for iOS and Android. We go native when the app needs something shared code does not give, and sometimes a web app without a store is enough.

CriterionOne codebaseReact Native or FlutterNativeKotlin and SwiftWeb appinstalled from the browser
iOS and Android from one codebaseOne codebaseyesA change written once reaches both systems.NativenoTwo codebases, one for each system.Web appyesOne codebase running in the browser.
App Store and Google Play releaseOne codebase, NativeyesWith the stores' review, which we handle.Web appnoIt installs from a link, with no store.
A fix without a new reviewOne codebasepartlySmall interface changes through OTA updates.NativenoA new version through the store.Web appyesRight after deployment.
Home screen widgetsOne codebasepartlyA widget is separate native code.NativeyesFull access to system widgets and notifications.Web appnoOnly a native app can have a widget.
Phone featuresOne codebaseyesCamera, maps, NFC, Bluetooth, QR codes, Apple Pay and Google Pay.NativeyesCamera, Bluetooth and sensors with system permissions.Web apppartlySome interfaces, depending on the browser.
When we choose itOne codebaseBoth platforms should do the same and widgets are not needed.NativeThe app needs widgets, background work or hardware access.Web appForms and notifications are enough.

Mobile apps in our portfolio

Real screens of apps we have built. These ones happen to be native, and you can see each in the portfolio with a description of its scope.

  • On call in the Flaem phone app: alarms with action buttons and the ticket queue

    Flaem: the operator on call

    Alarms, the case queue and node health on a hosting company operator's phone. Android in Kotlin, iOS in Swift.

  • An invitation to a Minecraft server in the Flaem app: the server address and how to join

    Flaem: the client app

    Servers with a console, a store with BLIK payment, invoices, tickets and push notifications, and for players an invite with the server address.

  • Plazer widgets on a phone home screen: conversations, a voice room, a friend and the next event

    Plazer: a messenger with widgets

    Encrypted chats, voice rooms and home screen widgets with your chats. Kotlin and Jetpack Compose, also on phones without Google services.

  • The assistant in the Gyred phone app: a summary of the sessions and a reminder

    Gyred: the assistant on a phone

    AI agent sessions from a phone: what waits for a decision, a quick reply from the list and a conversation with the assistant, by voice too. A native Android client.

All mobile apps

How much a simple mobile app costs

A mobile app costs from PLN 7,999. The simplest one is the Starter package, and we calculate the figure for yours in a free quote, together with the scope of the first version and the date.

  • Screens and user roles

    Every unique screen has to be designed, built and tested on each system the app goes to.

  • Features

    Payments, offline mode and Face ID sign-in change the scope, so we settle them before the quote.

  • Company systems and an admin panel

    Connecting to systems your company already runs and an admin panel are separate items in the quote.

  • Store accounts

    Apple Developer costs USD 99 for each year, Google Play USD 25 once. We create or configure the accounts for you.

A simple mobile app
The Starter package of our mobile app offer
Price
from PLN 7,999
Platform
iOS or Android
Screens
up to 10
Push notifications
Through FCM on Android and APNs on iOS, even when the app is closed.
In-app analytics
Sign-ups, purchases and other events, so you see on which screen people drop off.
Store release
The description, screenshots, privacy policy and getting through review.
Support after launch
90 days from acceptance for bugs caused by our work.
Both platforms from one codebase, offline mode and up to 25 screens are the Pro package, and in-app payments and Face ID sign-in are the Enterprise package.
Mobile app packages

Meeting in Kraków and the work on the app

An app usually takes 2-4 months, and we give the exact schedule in the quote. We meet in person twice: at the start and at acceptance. The rest runs online.

At your company
Kraków and the area
Talk
The first talk with the people who will use the app
Acceptance
Acceptance and a demo of the app for the people who will use it
Online
calls, email and the client panel
Day 1
A form, email or Discord. We usually reply within an hour.
Talk
A video call if you prefer online
Quote
Free: the first version's scope, the platforms and the date
Build
Test builds on your phone, progress in the client panel
Stores
Developer accounts, the description, screenshots and review
Acceptance
The code, store accounts and certificates

At the start

We see how the company works day to day and who will use the app. That does not show in a project brief.

Along the way

You install test builds on your own phone during the build, so you do not wait for the next meeting to see progress.

At acceptance

We show the app to the people who will use it and answer their questions on the spot.

Questions about mobile apps

About the cost, iOS and Android, timing, store release and meetings in Kraków.

Need an app for your business?

Tell us what the app should do and for whom. We usually reply within an hour, and we come over for a talk or meet online.