Custom software • Electronics • Digital products

From idea to a working solution.

I develop custom software, mobile apps and intelligent devices. If the solution needs its own electronics, we design that too. If software can solve it, we don’t overcomplicate it.

  • ✔ Custom software development and operations
  • ✔ SaaS platforms and mobile applications
  • ✔ AI automation and system integration
  • ✔ Secure data storage and data services
  • ✔ ISO 9001:2015 quality management
Book a free consultation View references Electronics & Engineering
Portrait of Attila Kasler
🏆 ISO 9001 · 15+ years
ISO
9001:2015 certified
15+
Years of experience
2017
Year founded
6
SaaS platforms
🏆
UK Business Awards
🌍
International references

About me, in a nutshell

About the company

Kasler Attila sole proprietorship, Budapest, since 2017.

Kasler Attila Egyéni Vállalkozás was founded in Budapest on 1 March 2017 to deliver high-quality custom software to its clients. From the start, the work has focused on websites, custom software development and mobile applications.

Over the years we have delivered numerous Hungarian and international projects across industries: museums, cultural institutions, sporting events, tourism apps, parking systems, emergency and food-delivery apps, and indoor navigation solutions.

The business has its own office and modern infrastructure that supports development, information security and data storage. Data protection is taken seriously: legal and technology changes are built into internal procedures, and subcontractors are kept up to date.

For every custom project I select the most suitable specialist from a qualified subcontractor network experienced in the relevant language and technology, with the right access rights and security controls.

Partners have worked with me with a high level of trust and satisfaction. Many clients return or stay in an ongoing collaboration. My aim is to be a long-term professional partner who delivers not only a technical solution, but a commercially sound, sustainable system.

Legal form Kasler Attila sole proprietorship
Registered office Budapest
Scope Custom software development and secure data storage

Compass

Mission and vision

Mission

My mission is to use up-to-date expertise, my subcontractors’ skills and technological innovation to give partners a real business advantage: to respond faster to challenges, automate processes where needed, and grow in a sustainable way.

Vision

  • To develop custom software for partners with specific needs, and to stay involved in their development through a long-term relationship.
  • To make proprietary software that supports operations accessible to small and medium-sized businesses as well.
  • To provide secure data storage for every partner, according to their needs.

Quality, not a slogan

Quality policy and ISO 9001

Certified quality management system according to MSZ EN ISO 9001:2015.

Certified quality management

The company’s quality management system operates according to MSZ EN ISO 9001:2015 (ISO 9001:2015). Its scope covers custom software development and operations, as well as secure data services, storage and retention.

Custom software development Operations Secure data storage Data services
Hungarian certificate (PDF) English certificate (PDF) German certificate (PDF)

Quality policy

I support the operations of many international and Hungarian businesses. Over more than 15 years I have gained broad experience in custom enterprise software, SaaS platforms, mobile apps, AI automation, system integration and the secure storage of partner data, always delivered to the satisfaction of clients.

My goal is to apply the most innovative solutions and to deliver development projects at the highest professional standard.

I therefore commit to

  • stating my business goals and commitment to partners in my mission, vision and this quality policy;
  • delivering quality, customer-focused, legally compliant work through software, platform and system development and disciplined data storage, supported by introducing and continually improving an ISO 9001:2015 system;
  • working with regularly qualified subcontractors who stay current and use the latest solutions to keep software secure, traceable and protective of client data;
  • providing the technology backbone through qualified suppliers, taking international requirements into account;
  • offering tailored solutions in line with client needs, while continuously monitoring my processes;
  • remaining committed to quality and to its continual improvement.

Platforms, live

SaaS platforms I built and operate

All platforms are powered by my proprietary software engine and actively used in real business environments.

The Work App

CEO
theworkapp.eu

Workforce management platform for companies managing employees, projects, attendance, scheduling and field operations.

Key features:

  • Time tracking
  • Scheduling
  • GPS attendance
  • Workflow management
  • Digital worksheets
  • Reporting
  • Contractor management

Dolgozz App

CEO
dolgozz.app

The Hungarian SME-focused version of The Work App: less administration, clearer operations, more work done.

Key features:

  • Attendance
  • Time tracking
  • Rotas
  • Task management
  • Digital worksheets

DentalManager

Co-owner

British-Hungarian Medical Service Kft.

Built for a 160-person dental practice network operating in 3 countries. I still maintain and develop it today.

Key features:

  • Patient management
  • Appointment scheduling
  • Medical records
  • Reporting
  • Clinic administration

CareApp24

Co-owner
careapp24.com

Digital home care and healthcare management platform supporting caregivers, healthcare providers and patients.

Key features:

  • Visit tracking
  • Care documentation
  • Staff management
  • Healthcare reporting

GymEzy

Co-owner
gymezy.eu

Gym and fitness studio management platform including memberships, class scheduling, attendance tracking and client management.

Key features:

  • Membership management
  • Booking system
  • Mobile app
  • Attendance control

Facility Managements

Co-owner
facility-managements.com

Professional facility management platform for cleaning companies, maintenance providers and facility service organizations.

Key features:

  • Workforce management
  • Digital inspections
  • Audits
  • Maintenance tracking
  • Reporting
  • Operational control

Honestly

Why companies work with us

Services, not a catalogue

I don’t sell technology. I solve problems.

The right solution can be a mobile app, an integration, a custom electronics device, or all of these together.

Mobile app development

Native iOS and Android apps, further development of existing projects, and stable integrations.

SaaS and enterprise software

Complex business systems, admin interfaces, backends, data management and operations.

Custom electronics and IoT

PCB, ESP32, firmware, sensors, wireless communication and mobile control.

System integration

Connecting different devices, APIs and existing systems.

Automation and AI

Automating measurable business processes, data analysis and AI integration.

Operations and data security

Long-term software support, secure data storage and operation.

Electronics, when code isn’t enough

When the software also needs its own electronics.

Design of custom devices, controllers, data loggers and intelligent systems, from prototype to mobile app.

You don’t need to arrive with a technical specification. I understand the problem first, then we choose the simplest solution.

Engineering solutions

Connected technologies

Electronics → Firmware → API → Mobile app

Sensor measurement, Bluetooth / Wi-Fi / MQTT communication, cloud connectivity, remote monitoring and business reports.

ESP32 PCB BLE MQTT iOS / Android

Awards, a little applause

Recognition and awards

Recognized for innovation in workforce management and mobile business solutions.

1ST PLACE

BUSINESS AWARDS UK 2024

Best Mobile Technology

Awarded 1st place in “Best Mobile Technology” for The Work App — recognized for innovation in workforce management and mobile business solutions.

2ND PLACE

22.02.2024, KINGSTON AWARDS (UK)

Best Digital

The Work App received 2nd place in “Best Digital”.

1ST PLACE

03.12.2015, APPLICATION OF THE YEAR

Quality Award (HU)

Origo received 1st place, “Application of the Year 2015” in Hungary.

Lately

Last 3 Projects

The most recent deliveries, full mobile app and admin system.

Magyar Építőipari Szakemberek Közössége
2026 · Delivered
Hungary iOS · Android · Admin

Magyar Építőipari Szakemberek Közössége · MAPEI

Professional community platform for MAPEI Hungary: iOS and Android mobile app with a full admin and content management system.

Google Play App Store
Pázmány Kártya
2025 · Delivered
Hungary iOS · Android · Admin

Pázmány Kártya

Loyalty card app for Pázmány Péter Catholic University. Digital card, partner management, event calendar, iOS and Android app, full admin system.

Google Play App Store
KAPP, Magyar Katolikus Egyház
2025 · Delivered
Hungary iOS · Android · Admin

KAPP, Magyar Katolikus Egyház

Official app of the Hungarian Catholic Bishops'Conference. News, daily readings, event calendar, pilgrimage routes, iOS and Android app, full admin and content management system.

Google Play App Store

References, the proof

References

Custom software, SaaS systems, mobile apps and digital projects for international and Hungarian clients.

🌍 International projects

Sheikh Abdullah Al Salem Cultural Centre

Kuwait iOS · Android · Web · CMS

iOS and Android apps, website, digital exhibition management, indoor-outdoor navigation, full CMS.

Airport indoor navigation

Kuwait · Saudi Arabia iOS · Android

Indoor navigation solution for airports (Kuwait, Saudi Arabia).

Verkehrshaus

Switzerland iOS · Android · CMS

iOS and Android apps, digital exhibition management, indoor-outdoor navigation, complete CMS.

Rockmuseum

Germany iOS · Android

iOS and Android apps for digital exhibition content.

V-navi

Germany iOS

Car GPS navigation app (iOS).

Textilland

Switzerland iOS · Android

iOS and Android outdoor navigation apps for Swiss landmarks.

O-Valet Parking System

Canada iOS · Backend

iOS app, parking system modules and push notification system.

Alerty 1.0

Sweden iOS

Emergency app (iOS).

Voila

UAE iOS

Local food delivery app (iOS).

IKV Events

Germany iOS · Android

iOS and Android apps, event calendar for conferences and seminars.

🇭🇺 Hungarian projects and media

Origo

Hungary iOS

iOS news app; Application of the Year 2015, Media Design and UX Gold Award.

2014 FIFA World Cup

Hungary iOS

iOS app for sports fans.

2017 FINA World Championships

Hungary iOS

iOS app.

Telekom Vivicittá

Hungary iOS

iOS app for a major running event.

Magyar Hírlap

Hungary iOS · Android · CMS

iOS and Android news apps and editorial system.

Ironman 70.3 Budapest

Hungary iOS · Android

iOS and Android, registration, volunteer coordination, 2,000+ participants.

Vous.hu & Cookta.hu

Hungary Web · CMS

Magazine portals with CMS.

Radnóti Színház

Hungary Web · CMS · Navigáció

Website, exhibition management, indoor navigation, CMS.

Sárvár city app

Hungary iOS · Android

iOS and Android outdoor navigation.

Hungarian National Gallery

Hungary iOS · Android · CMS

iOS and Android, exhibition management, CMS.

Hungarian Catholic Church

Hungary iOS · Android

Official iOS and Android news application.

Shall we talk?

Let's build something great together

Need a SaaS platform, mobile application, AI solution or custom business software? Let's discuss your project.

Email attila@kasler.hu Phone +36 30 698 2603 LinkedIn linkedin.com/in/kaslerattila WhatsApp +36 30 698 2603

Book a free consultation

WhatsApp