Custom apps that put your business in your customers' pocket.
We build mobile and web apps for booking, concierge, and customer-facing workflows — on a modern stack, fully owned by you, with no proprietary lock-in.
A generic listing or booking platform doesn't feel like your brand.
Third-party booking tools and marketplace apps get the job done, but they put someone else's logo on your customer relationship, charge ongoing fees per transaction, and cap what you can build. For a hospitality or service business, that's the moment guests decide who they remember — your name, or a platform's.
We build the app instead: custom-branded, wired to the exact workflow your team already runs, and delivered on a modern stack (React Native or Flutter, with a Node.js backend) that's fast to build, cheap to run, and entirely yours.
Ownership and brand control across common approaches — the more custom the build, the more of the relationship (and the data) you keep.
Built right, from the backend to the app store.
Open any area to see what's inside a Platypus app build.
01 iOS & Android app development
One codebase, both platforms, without compromising on feel.
- Cross-platform builds on React Native or Flutter
- Native Swift/Kotlin when a feature needs it
- Responsive, offline-friendly, and tested across devices
- Polished, on-brand interactions and animation
02 Backend & API development
A backend built to support real usage, not just a demo.
- Node.js APIs with a Postgres or Supabase database
- Authentication, user accounts and role-based access
- Admin dashboards for your team to manage the app
- Built to integrate with the tools you already run
03 Booking, payments & concierge workflows
The features that turn an app into a working part of your business.
- Reservations, scheduling and availability
- Secure payments and checkout
- In-app guest messaging and itineraries
- Staff-facing tools to manage requests in real time
04 Push notifications & engagement
An app in someone's pocket is the highest-attention channel you have — we help you use it well.
- Push notifications for confirmations, updates and offers
- In-app messaging and alerts
- Segmented, permission-based targeting
- Analytics on opens, engagement and retention
05 App Store & Play Store launch
We handle the submission process so launch day isn't a scramble.
- App Store and Google Play account setup
- Store listing copy, screenshots and assets
- Compliance and review-guideline checks
- Versioned releases and update rollouts
06 Ongoing support & updates
An app is a living product, and we stay in it with you.
- OS and dependency updates to keep it running smoothly
- Bug fixes and monitoring
- New features as your business grows
- Optional ongoing maintenance retainer
Modern, open tools — nothing proprietary.
The same principle as our web builds: everything we use is an open, portable technology, so you're never locked into us or a platform vendor.
React Native & Flutter
Cross-platform frameworks that ship one codebase to iOS and Android, with native Swift or Kotlin available when a feature calls for it.
Node.js, Postgres & Supabase
Battle-tested, well-documented tools for APIs, databases, authentication and real-time features — easy for any future developer to pick up.
Stripe & your existing tools
Secure payments through Stripe, plus connections to the booking, CRM or property systems your business already runs on.
Cloud infrastructure you control
Backends deployed on standard cloud infrastructure under your own accounts — no black-box hosting you can't access.
From scoping call to a live app in the store.
Scope
We map the exact workflows the app needs to support and the core screens that make up version one.
Design & prototype
We design the flows first, so you can react to a clickable prototype before a line of code is written.
Build & integrate
We build the app and backend, wiring in payments, notifications and any systems you already use.
Launch & support
We submit to the App Store and Play Store, then stay on to fix, update and extend it as you grow.
App development questions, answered.
Do you build native apps or cross-platform apps?
Most projects use React Native or Flutter, which ship a single codebase to both iOS and Android — faster to build and cheaper to maintain. When a feature genuinely needs native performance, we build natively in Swift or Kotlin instead.
Can you build booking or concierge-style features?
Yes — reservations, guest messaging, itineraries, staff dashboards and payments are common building blocks we wire together for hospitality and service businesses.
Do I own the app and its code?
Completely. Your codebase, backend, and developer accounts are yours, with no proprietary lock-in. You can take it to another team at any time.
How long does a custom app take to build?
It depends on scope, but a focused first version (core screens, one or two key workflows, backend and store submission) typically runs eight to twelve weeks. We scope it with you up front so there are no surprises.
Related services
Have an app idea to scope?
Let's talk through the workflow, the platforms, and what a first version could look like.