Web and mobile app development built for real-world use

We design, build and release accessible, high-performance web and mobile applications through AI-augmented engineering.

Trusted on systems that cannot fail

SiemensYunex TrafficAutobahn
Finastra
InfraSignal
Abidat
PTV Group
Körber
Westfalia
FrontFundr
GFA Group
Seneca ESG
Cygon
Dasan
Aimsun
eGo Digital
Maoneng
OnOffice
Reinstil
<200 ms
Real-time response latency
25-35%
User performance improvement
30-40%
Development effort reduction

Certified, accredited and independently reviewed

Clutch Top App Modernization Service company, Vietnam 2026Clutch Top Cloud Consulting Company, Vietnam 2026Clutch Top Machine Learning Company, Vietnam 2026
Capabilities

Web and mobile app development, from discovery to release

One team takes responsibility for the entire product lifecycle, from early specifications to deployment and ongoing improvement.

Product and UX discovery at Eastgate Software

Product and UX discovery

We map user journeys, define the scope and agree on a behaviour-first specification before development begins.

Talk to an engineer
Benefits

What you gain from our web and mobile app development

We build these six qualities into your application from the start, instead of trying to add them before launch.

Responsive design

We design for mobile and desktop from the start, so every screen preserves its usability and core functionality across devices.

Usability

Clear navigation and familiar interaction patterns reduce friction for users at every level of technical experience.

Security and reliability

We test security before release, keep sensitive credentials server-side, and configure hosting and CI/CD pipelines for reliable deployments.

Customisation

We tailor features, workflows and interfaces to your requirements, priorities and agreed budget.

Easier maintenance

Reusable components and a well-structured codebase make updates easier to test, deploy and maintain as the product grows.

Flexibility and scalability

Modular architecture lets you add features, support more users and connect new systems without rebuilding the application from scratch.

Technologies

Web and mobile development technologies chosen to last

We select each layer based on what your product needs and what your team can operate, maintain and hire for after launch.

Web

TypeScript

React

Next.js

Angular

Tailwind

Storybook

How we build it

How Our Agent-Centric Development Cycle Works

AI agents accelerate implementation, while senior engineers define the specifications, govern every delivery gate and remain accountable from discovery through post-launch support.

What the framework delivers

30–50%
Shorter time to market
40–60%
Less rework and redevelopment
2–3×
More delivery throughput per engineer
90%+
Requirements covered by automated tests
Case study

Augmented reality service visualization, responsive under 150 ms

A Japanese service business could not get customers to picture the service they were buying. Augmented reality was the obvious answer and the hardest to get right: a 3D model that stutters or drifts on a phone does more damage than a flat image. We built it natively for iOS and Android, reworked how the models load and render, and let people reconfigure the view as they use it.

AR interaction latency
<150 ms
App stability
99%
Engagement
Project-based · 6 months
Capabilities
Mobile development · AR/VR · 3D visualization
Testimonials

Our Clients Say It All

Engagement models

Choose the Right Web and Mobile Development Model

Every engagement begins with a fixed-price assessment. You receive a written plan to keep, whether you continue with us or not. We then recommend the model that fits your product, timeline and team, even when the right answer is none of the three.

Discover Design Build Test Release

Product Build

You need a new web or mobile application designed, developed and prepared for launch.

Commercial model
Fixed-scope phases based on an agreed specification
Typical duration
10–20 weeks
Eastgate team Your team

Embedded Product Pod

You need a dedicated product team to extend, maintain and improve a live application.

Commercial model
Dedicated squad on a monthly engagement
Typical duration
6+ months
Audit Fix plan Implement

Quality Sprint

Your application exists but falls short on performance, accessibility, security or reliability.

Commercial model
Audit, prioritised fix plan and implementation
Typical duration
3–6 weeks
FAQ

Frequently asked questions

Something not covered here? Ask an engineer directly.

Native or cross-platform?

It depends on what the app does. Heavy device integration or sustained performance work argues for native. Most product apps ship faster and stay cheaper on React Native or Flutter. You get the trade-off in writing before the decision is made.

What accessibility standard do you build to?

WCAG 2.2 AA by default, with acceptance criteria written into the spec and automated checks in CI. We can align to EN 301 549 or Section 508 where procurement requires it.

Do you work with our designers?

Yes. We can build to your design system or engineer one with you. Either way it ships tokenized and documented.

Can you take over an existing app?

Often. We start with an audit and a characterization test pass, so we know what we are changing before we change it.

Who handles store submissions?

We do, including review responses. The developer accounts stay in your name.

Let's Work Together

Tell us what you're building. Our engineers will respond within 1 business day with a concrete next step - no sales script, no obligation.