Apps your customers keep on the first screen
We build mobile products end to end: the app, the API behind it, the notifications, the payments and the store releases. Cross-platform where that halves the work, native where the platform is the point.
Choosing between cross-platform and native
Key benefits
What this changes for your business.
One codebase, two stores
A shared Flutter codebase means a feature is written once and shipped to both platforms in the same release, not twice with a lag.
Works when the signal does not
Offline-first data handling and a sync strategy decided up front, for people using the app in a warehouse, a basement or a moving vehicle.
Notifications people do not mute
Push segmented by what a user actually did, with delivery and open rates measured — not a broadcast to everyone at 9am.
Store review handled
Privacy manifests, permission justifications, data-safety forms and the rejection loop are our problem, not yours.
You can see what happens after install
Analytics and crash reporting wired in from the first build, so the second release is informed by data rather than opinions.
What we deliver
The things you actually receive.
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Cross-platform apps with Flutter
One codebase, native builds for iOS and Android, and a design system shared with your web product.
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Native iOS applications
Swift and SwiftUI where the app depends on platform capabilities the moment Apple ships them.
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Native Android applications
Kotlin and Jetpack Compose, built against the device and OS spread your users actually have.
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The backend the app talks to
A documented API, authentication, file handling and an admin for the people who run the product.
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In-app payments and subscriptions
Store billing where the platforms require it, and card payments where they do not.
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Release pipelines
Automated builds, TestFlight and internal testing tracks, staged rollouts and a rollback that works.
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App maintenance
OS updates break things every autumn. Keeping the app working through that is a service, not an incident.
Core capabilities
The engineering disciplines this service draws on.
Technologies we use
The stack we would reach for, and what each part is for.
Flutter
One codebase producing native iOS and Android builds, which halves the surface area a small team has to keep in step.
Swift
Apple’s own language for iOS. The right answer when an app depends on platform features the moment they ship.
Kotlin
Google’s recommended language for Android, and the one its modern UI toolkit is written for.
Firebase
Managed authentication, push notifications, crash reporting and analytics — the plumbing every mobile app needs and none should rebuild.
Laravel
A mature PHP framework for secure, maintainable server-rendered applications and APIs, with authentication, queues and testing built in.
TypeScript
Static types over JavaScript. On a codebase several people maintain, it turns a class of runtime bugs into compile-time ones.
PostgreSQL
A relational database with strong support for JSON, full-text search and geospatial data, for models that outgrow plain tables.
Stripe
Payments, subscriptions and payouts, with the card data staying on the provider’s side of the boundary rather than ours.
Technology adoption
Technologies in this stack are publicly documented as being used by organisations including those below.
These organisations are named as documented users of the technologies listed. They are not clients of Vertex Arc, and their inclusion does not imply any relationship with or endorsement of Vertex Arc.
Industries we serve
Sectors where this service tends to fit well.
- FinTech
- Logistics
- Healthcare
- Retail
- Hospitality
- Education
Our delivery process
How an engagement runs, from first conversation to ongoing support.
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Discovery
We work out what the software has to do, who uses it, and which constraints are real. The output is a written scope, not a proposal.
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Architecture
Data model, boundaries, integrations and infrastructure decided and agreed before anybody writes application code.
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Design
Flows and interface, including the empty, error and permission states that decide how the product actually feels.
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Development
Built in reviewable increments against a conventional structure, with tests around the parts that would be expensive to break.
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QA & security
Functional testing, performance checks, and a review of authentication, authorisation and dependency risk before launch.
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Launch
Deployment, monitoring, and a period of close attention while real traffic finds what staging did not.
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Continuous improvement
Patches, upgrades and new work through the support system, so the product keeps being maintained rather than quietly ageing.
Use cases
What this looks like as a finished product.
Field operations app
Technicians capture jobs, photos and signatures on site, and the records sync when a connection comes back.
Customer companion app
Accounts, orders, documents and support in the pocket of the customer who would otherwise call your office.
Booking and loyalty app
Appointments, reminders, stored payment methods and a rewards scheme that actually reconciles with the till.
Why Vertex Arc
We recommend the cheaper option when it is the right one
If cross-platform serves your product, we say so — even though two native builds would be a larger engagement.
The backend is not somebody else’s job
App and API are built together, so the two never wait on each other or disagree about a payload.
Tested on real devices
Not just the newest simulator. Old Android hardware and small screens are part of the test matrix.
Arabic and Turkish, properly
Right-to-left layouts, locale-aware dates and numerals, and translated store listings — not an afterthought release.
Frequently asked questions
Flutter or native — how do you decide?
Do we need a separate backend?
Who owns the App Store and Play accounts?
What does maintenance involve after release?
Have a project in mind?
Book a 30-minute call with the engineers who would do the work, or send us the details and we will come back to you.