Skip to main content

App Development

Book a free consultation

Why Choose REPTILE.HAUS

We’ve been building mobile apps since 2016. We’ve worked with startups, scale-ups, and established businesses—from lifestyle apps with thousands of active users to social platforms handling millions of real-time messages and complex backend operations.

  • We build for scale from day one – Whether you’re launching an MVP or scaling an existing app, we architect with growth in mind. Our apps have handled 100K+ concurrent users, millions of real-time messages, and complex social features without breaking a sweat.
  • Performance is non-negotiable – Slow, laggy apps drive users away. We obsess over load times, offline functionality, and native-like performance. Our apps are optimised for smooth animations, instant responses, and minimal battery drain.
  • We optimise for user retention – Better user engagement, higher retention rates, more organic installs through app store optimisation. We don’t just build apps; we build platforms that keep users coming back.
  • Hands-on partnership – Our team stays involved throughout. You get strategic input on user experience, feature prioritisation, and scalability – not just code.
  • We speak your language – Technical founders appreciate that we can discuss backend architecture, database optimisation, and push notification strategies. Non-technical founders appreciate that we explain things clearly without jargon.

The result: You get an app that’s fast, reliable, intuitive, and built to grow with your user base—across both iOS and Android.

Who We Work With

We’re the ideal fit if you’re:

  • A startup or growing business—our in house AppBox framework starts at just €2K for a bare-bones iOS and Android app with authentication, real-time messaging, push notifications, and native features like camera access.
  • A founder or technical leader who understands that your app is a business-critical asset
  • Building a social, lifestyle, or utility app that needs to scale and retain users
  • Looking for a partner who can advise on user experience, feature prioritisation, and backend scalability-not just code
  • Ready to launch in 2–6 months and need a team that can move fast without cutting corners.
Our sweet spot: Ambitious founders and growing companies building apps that need to work reliably, engage users consistently, and scale without breaking a sweat.
* With our hybrid approach, you get iOS + Android + web app for ~50% less than native development – a massive competitive advantage.

Lets get started

Book a free consultation

Capabilities

Our in‑house team delivers a full suite of services tailored to your app needs:

  • Native iOS & Android development – Using hybrid technologies (Capacitor) to build cross-platform apps that feel and perform like native apps, with access to native features like push notifications, camera, location, and offline storage.
  • Real-time messaging & chat – Scalable real-time communication with WebSockets, including message history, read receipts, typing indicators, and rich media support.
  • User authentication & profiles – Secure login systems, social authentication (Google, Apple, Facebook), profile management, and user-generated content handling.
  • Push notifications & engagement – Strategic push notification systems that drive engagement without overwhelming users, including segmentation and analytics.
  • Backend architecture & APIs – Highly scalable backends built on Node.js, Python, and Google Cloud infrastructure. We design for millions of concurrent users and seamless data synchronisation.
  • Offline functionality – Apps that work without internet, syncing data when connection returns—critical for social and lifestyle apps..
  • App store optimisation & deployment – We handle app store submission, optimisation for discoverability, versioning, and ongoing updates.
  • Performance optimisation & analytics – Fast load times, smooth animations, minimal battery drain, and comprehensive analytics to track user behaviour.
  • Hosting, security & DevOps – Managed cloud infrastructure (GCP, AWS), automated scaling, security audits, and monitoring.
  • Ongoing support & maintenance – SLA packages, regular updates, feature rollouts, and performance optimization based on user feedback and analytics.

Is Your App Struggling to Retain Users?

Many organisations struggle with:

  • Poor user experience that drives app uninstalls and negative reviews
  • Slow performance, crashes, and battery drain that hurt ratings and retention
  • Lack of real-time features (messaging, notifications, updates) that keep users engaged
  • Outdated design that fails to reflect their brand or connect with users
  • Scaling challenges when the user base grows

Your app should actively drive engagement, not just sit in a user’s phone.
We build custom solutions that overcome these challenges, delivering seamless experiences and measurable user growth.

Development process

01. Discovery & Strategy

We start by understanding your goals, target users, competitive landscape, and technical requirements. We ask the hard questions: What does success look like? How will users find and use your app? What’s your timeline and budget? We validate your concept with real users before writing code.

02. Design & Validation

We craft intuitive, user-friendly designs with wireframes and interactive prototypes. We iterate quickly, validating concepts with your team and real users. The result is a validated app design that everyone agrees on before development begins.

03. Development & Integration

Using our hybrid technology stack and AppBox framework, we build fast, cross-platform apps that integrate with backend services, payment systems, and third-party APIs. We prioritise code quality, testing, and documentation for long-term maintainability.

04. Deployment & Ongoing Optimization

After thorough testing and security reviews, we deploy to the Apple App Store and Google Play Store. We monitor performance, user feedback, and analytics—then continuously optimise features, fix bugs, and roll out updates to keep your app performing at its best.

Dont take our word for it, our clients say this:

REPTILEHAUS helped us build and scale the #1 Web3 launchpad during the 2021 bull market. Their team understood both the technical complexity and the need for bulletproof infrastructure when handling millions in user funds.

Christoph ZaknunCEO at DAO Maker

I was referred to REPTILEHAUS by a Dublin-based company. I came to them with a rough idea, and they quickly understood my vision, explaining the entire development process clearly. They helped shape my project from a basic concept into a structured plan. As my project grows, we continue to work together, and I’ve since recommended them to several colleagues.

Jonny O'MalleyCEO at GoRaffleIt.com

I have had the pleasure of working with REPTILEHAUS since 2015 and have found them extremely professional and responsive to work with. They manage our website on an ongoing basis make sure it's maintained and that its performance is optimized at all times. I look forward to working with them in the future.

Oliver FinnCMO at iQuate

Patrick and the REPTILEHAUS team came highly recommended, they took the time to understand our needs, delivering a functionally excellent site with a vastly improved user experience. Working closely with our graphic designer, they brought our vision and brand voice to life, we get daily compliments on how vibrant and intuitive it is.

Helen CahillCEO at InvoiceFair.com

We've relied on REPTILEHAUS for web hosting for a few years now and their support has been unmatched, always available and highly knowledgeable in optimising our site's performance.

Aisling O'CallaghanMarketing Exec at Mobileum.com

Styla needed a website that truly reflected our product. We brought Patrick at REPTILEHAUS into our Berlin studio to coordinate design, implementation, and hosting, an approach that worked seamlessly. For the past number of years, their support has been fast, responsive, and creatively solving problems as they arise. Highly recommended!

Alexander KongCTO at Styla GmbH

REPTILEHAUS feels like an extension of our studio rather than just freelancers. They prioritize design, delivering pixel-perfect sites that match our files exactly. No matter how complex the task, they execute flawlessly, on time and on budget. Highly recommended!

Aileen CoxOwner at Sweet Design Studio

Lets get started

Book a free consultation

Results & Social Proof

Our projects have directly contributed to significant user engagement and business outcomes for our clients.

What we typically deliver:

  • 50% reduction in development costs – compared to native iOS and Android development, our hybrid approach delivers the same functionality across both platforms plus a web app for one price.
  • Scalable infrastructure – apps built to handle growth from hundreds to millions of users without performance degradation.
  • Fast time-to-market  – our AppBox framework lets us launch MVPs in weeks, not months.
  • High app store ratings – intuitive design, smooth performance, and user-focused features drive positive reviews and better rankings.

Some notable projects:

Poochie – The Dog Tinder App

Launched during COVID-19, Poochie became the go-to app for dog owners to connect with other dog lovers. We designed and built a fully-featured iOS and Android app with user profiles, photo timelines, fun swiping mechanics, and real-time messaging.

Key metrics:

  • Thousands of active users within first months
  • Real-time messaging system handling millions of messages
  • Highly scalable backend built on Google App Engine
  • Seamless iOS and Android experience
  • Featured on multiple app store “charts”

Built and launched MVP in record time, then scaled the backend to handle exponential user growth during lockdown without a single outage.

StillActive - Seniors Social Network – Multi-Language, Award-Winning App

We built an award-winning social app for seniors in Scandinavia to rediscover hobbies, meet new people, and stay engaged. The app featured user profiles, activity discovery, real-time messaging, push notifications, and an admin dashboard for moderation.

Key outcomes:

  • Multi-language support (Swedish, German and English)
  • Offline functionality – users could access content without internet connection
  • Real-time messaging system
  • Event discovery and management
  • Push notifications to drive engagement
  • Secure admin panel for content moderation
  • Fully scalable infrastructure

App became incredibly popular with senior users across Scandinavia and won some awards. Eventually acquired by a Swiss HealthTech company.

Technology & Tools

We use a modern, battle-tested technology stack designed for performance, scalability, and maintainability:

  • Frontend – Angular and Capacitor for native device interaction.
  • Backend – GoLang, Node.js, Python, Firebase, PostgreSQL, MongoDB, REST APIs, GraphQL, WebSockets for real-time features.
  • Infrastructure & DevOps – GCP,AWS, Docker, k8s, CI/CD pipelines
  • Real-time & Messaging –  Socket.io, Firebase Cloud Messaging for instant notifications and messaging.
  • Analytics & Monitoring – Firebase Analytics, Sentry, CloudWatch for tracking user behavior and app health.
  • App Store & Security – App Store Connect, Google Play Console, SSL/TLS, secure authentication, and encrypted data storage.

We choose the right tool for each project—no unnecessary complexity, just what your business needs to succeed.

Built for speed. Engineered for scale.

Ready to build a digital platform that performs and endures?

Let's talk about your vision. Contact us today for a free consultation and discover how we can turn your app idea into a growth engine.

APPBOX PROMOTIONAL OFFER - Start Building for €2K

For those just starting out, our AppBox framework is a game-changer. You get a fully functional iOS and Android app (plus web app) for just €2,000. Includes:

  • iOS and Android apps
  • User authentication and profiles
  • Real-time messaging with Firebase
  • Push notifications
  • Camera and media access
  • Payment integration ready
  • Fully scalable backend on Google App Engine
  • 50% cheaper than native development

Customise further based on your needs. For organizations with more complex requirements, we provide fully bespoke app development solutions.

Learn more about AppBox