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Software studio · Nyon, Switzerland

Custom-builtapplicationsthat move your business forward.

KeuZzDar designs, builds and maintains your web and mobile applications, your websites and your IT infrastructure. One single point of contact, from the first idea to production.

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  • Since 2017
  • Web · Mobile · IT
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01 About

A technical partner, close to you.

Founded in November 2017 in Nyon, KeuZzDar specialises in building applications and digital solutions.

We support individuals, freelancers and SMEs across La Côte and French-speaking Switzerland with digital tools built to last: business applications, mobile apps, websites and online stores.

Beyond code, KeuZzDar also looks after your infrastructure: network, backups, security and technical support. You deal with one person who knows your project inside out.

  • 9+ years of experience
  • 5 applications built

  • Tailor-made

    Every solution starts from your real needs, not from a generic template.

  • Reliable and secure

    Maintainable code, security best practices and tested backups.

  • Based in Nyon

    A local presence for direct conversations.

02 Our services

From concept to production, and beyond.

Four areas of expertise covering the whole life cycle of your digital tools.

  • 01

    Web & mobile applications

    Business applications, client portals and native or cross-platform mobile apps, built to be fast and easy to evolve.

    • Angular & Node.js web applications
    • Native Android (Kotlin) and cross-platform
    • APIs, integrations and automation
    • App store publishing and follow-up
  • 02

    Websites & e-commerce

    Elegant multilingual websites that showcase your business, and secure online stores that sell for you.

    • Responsive, multilingual showcase sites
    • Online stores with secure payment
    • Search engine optimisation (SEO)
    • Performance and accessibility
  • 03

    Infrastructure & cybersecurity

    A reliable network, protected data and a backup strategy that lets you recover quickly after an incident.

    • Network installation and migration
    • Cloud services
    • IT security and best practices
    • Backup and recovery planning
  • 04

    IT support & maintenance

    Diagnostics, troubleshooting and preventive maintenance to keep your computers and systems performing every day.

    • Hardware diagnostics and repair
    • Preventive maintenance
    • System optimisation
    • Responsive technical assistance

How we work

  1. 1

    Listen

    A first conversation to understand your goals, constraints and budget.

  2. 2

    Design

    Mock-ups, technical choices and a clear quote before we start.

  3. 3

    Build

    Agile iterations and regular demos, so you always see the progress.

  4. 4

    Launch & support

    Go-live, training and maintenance to keep your solution alive.

Let’s talk about your project

03 Apps

Our in-house products.

Products designed, built and maintained by KeuZzDar: games, learning tools and e-commerce. Find the latest news and release notes here.

  • AnswerITLive
    Web

    AnswerIT

    Smart quizzes for revision

    AnswerIT is a multiple-choice quiz web app for teachers and their students. It lets learners practise on specific topics and track their progress.

    • “Sensei” AI
    • Detailed statistics
    • FR · EN · DE
    Version
    v1.1.0
    Updated
    20 April 2026
    Open the app
  • Random RoyaleBeta
    AndroidWeb

    Random Royale

    Deck generator and sharing

    Random Royale is a cross-platform app to build decks, share them and analyse their statistics in real time. You can also compare cards one by one.

    • Android & Web
    • Real-time stats
    • Sharing
    Version
    v0.3.0
    Updated
    15 April 2026
    Open the app
  • Paws EternalBeta
    Web

    Paws Eternal

    Pet statues and urns

    Paws Eternal creates statues and urns in the likeness of your pet, from 10 to 30 cm, customisable with a base and an engraved text such as its name.

    • E-commerce
    • Secure payment
    • Order tracking
    Version
    v0.9.5
    Updated
    24 April 2026
    Open the app

Archive

The very first KeuZzDar apps, where it all began.

  • Ultimate Random Deck Android

    The Android follow-up to Random Deck: quick access to the latest cards and one-tap opening of Clash Royale with the generated deck.

    2019 – 2020v2.65 (14)

  • Random Deck Windows

    A Windows utility for Clash Royale: random deck generation with custom rules and side-by-side statistics.

    2016v1.36

Let’s innove Something !

Our philosophy, day after day.

04 About the founder

Behind KeuZzDar.

I’m Dylan Métral, founder and lead developer of KeuZzDar. I help individuals and businesses design reliable digital solutions, from the first idea all the way to production.

My passion for programming started in 2015 and has grown with every project: C, C++, Java, C#, TypeScript, Kotlin, Python, SQL and many more.

When I founded KeuZzDar in 2017, I wanted to offer tailor-made solutions that combine technological innovation with quality of service.

Dylan Métral

Founder & Lead Developer · KeuZzDar

05 Contact

Let’s talk about your project.

An app idea, a website to rebuild or an IT issue? Describe what you need and I will get back to you personally.