Native feel, web reach

Fast, installable PWAs with offline support and a native feel one codebase for every device, no download required.

Start a project See our work

Progressive Web AppsWeb Development You own it

OfflineInstallable1 codebase

Sprint demosEvery 1–2 weeks

You own itCode, data & IP

exarth.com/progressive-web-apps

New

One accountable team from discovery through launch and handover.

100+Projects shipped

9+Years building

6Disciplines

30+Services offered

Overview

Native feel, web reach

We build progressive web apps that load instantly, work offline, and feel native installable straight from the browser.

Offline

works without signal

Installable

add to home screen

1 codebase

every device

Offline supportKeeps working even when the connection drops.
Installable & app-likeAdd to home screen no app store required.
Push notificationsRe-engage users like a native mobile app.
One codebaseBuild once, reach phones, tablets, and desktops.

HTML5
CSS3
JavaScript
jQuery

Discuss your project

Overview

Native feel, web reach

We build progressive web apps that load instantly, work offline, and feel native installable straight from the browser.

All the reach of the web, all the experience of an app.

What that means for you

Offline support

Keeps working even when the connection drops.

Installable & app-like

Add to home screen no app store required.

Push notifications

Re-engage users like a native mobile app.

One codebase

Build once, reach phones, tablets, and desktops.

Progressive Web Apps

Web Development

Offline

works without signal

Installable

add to home screen

1 codebase

every device

Every build includes

Fully responsive design
SEO optimisation
Performance tuning
Security hardening
Analytics & monitoring

Built with

HTML5
CSS3
JavaScript
jQuery
AJAX
Bootstrap

Discuss your project

What we build

Everything your web app needs

Production-ready capabilities included as standard.

A complete, production-ready feature set designed, built, and tested to ship, not a checklist of buzzwords.

6core
capabilities

Offline supportService workers keep it working without signal.

InstallableAdd to home screen no app store needed.

Push notificationsRe-engage users like a native app.

Instant loadsCached assets for app-like speed.

App-like UXSmooth, native-feeling interactions.

Auto-updatesAlways current, with no manual updates.

Capability 01 / 0601

Offline support

Service workers keep it working without signal.

What's included

Service workers
Cached content
Background sync

Included as standardStart a project

Why this approach

Custom-built vs the alternative

Same job, two very different outcomes.

The same job, two very different outcomes. Here's an honest, side-by-side look.

Recommended

Custom-built with Exarth

An installable, offline-ready app that reaches every device from one build.

Alternative

A plain website or native-only app

A plain site with no app feel, or a costly native-only app.

OfflineWorks without a connection
InstallableAdd to home screen
Re-engagementPush notifications
CostOne build, every device
SpeedInstant, cached loads

Recommended

Custom-built with Exarth

An installable, offline-ready app that reaches every device from one build.

Best long-term value

VS

Alternative

A plain website or native-only app

A plain site with no app feel, or a costly native-only app.

Hidden long-term cost

Criteria

With Exarth

A plain website or native-only app

Offline

Works without a connection

Breaks with no signal

Installable

Add to home screen

Browser tab only

Re-engagement

Push notifications

No way back in

Cost

One build, every device

Pay per platform

Speed

Instant, cached loads

Full reloads each visit

A PWA gives you app-like reach without the app-store cost the best of both worlds, from one codebase.

Build it the right way

How we work

From idea to launch

Four phases with demos and deliverables at every step.

A clear, four-phase path with real demos and deliverables at every step you always know what we're doing and what you'll get.

Week 101
Discover
We define the core experience and offline needs.
Week 1–202
Design
An app-like, installable interface.
Week 2–503
Build
Service workers, caching, and push wired in.
Week 5+04
Launch
Ship to every device from one codebase.

01
Week 101/04
Discover
We define the core experience and offline needs.
What we do
- Define core flows
- Scope offline
What you get
- Core experience defined
- Offline needs
02
Week 1–202/04
Design
An app-like, installable interface.
What we do
- App-like UI
- Install flow
What you get
- App-like UI
- Install flow
03
Week 2–503/04
Build
Service workers, caching, and push wired in.
What we do
- Service workers
- Push & caching
What you get
- Service workers & push
- Sprint demos
04
Week 5+04/04
Launch
Ship to every device from one codebase.
What we do
- Ship & monitor
- Iterate
What you get
- Ship to all devices
- Monitoring

Technology

Built on a modern, proven stack

Tools chosen to fit the problem, not the hype.

Battle-tested tools chosen to fit the problem, not the hype cycle fast, secure, and a pleasure to maintain.

SpeedSecurityScalabilityMaintainability

Frontend8Installable, offline-ready UX.
- HTML5
- CSS3
- JavaScript
- jQuery
- AJAX
- +3
Backend5Push notifications and sync.
- Node.js / Express
- Python · Django
- FastAPI
- Flask
- Web Push
Data2Offline-first, reliable data.
- IndexedDB
- PostgreSQL
Infra2Edge-fast global delivery.
- Vercel / AWS
- CDN

Chosen for

Speed

Optimised for fast, responsive software.

Security

Hardened with best-practice defaults.

Scalability

Grows with your users and team.

Maintainability

Clean, documented, easy to extend.

01

Frontend

8 tools

App-like UI with offline support.

HTML5
CSS3
JavaScript
jQuery
AJAX
Bootstrap
React / Next.js
Workbox

Installable, offline-ready UX.

02

Backend

5 tools

APIs and web-push notification services.

Node.js / Express
Python · Django
FastAPI
Flask
Web Push

Push notifications and sync.

03

Data

2 tools

Local and server-side storage.

IndexedDB
PostgreSQL

Offline-first, reliable data.

04

Infra

2 tools

Edge delivery and reliable hosting.

Vercel / AWS
CDN

Edge-fast global delivery.

Sectors we engineer for

Industries built for real friction

Pick a sector to see what we build for it.Each vertical has different compliance, UX, and scale demands. Pick a sector to preview exactly what we build for it.

01 / 10

Healthcare

HIPAA-aware platforms for clinicians and patients.

Patient & provider portals
Telemedicine & scheduling

HL7/FHIRSecure APIs

Discuss a Healthcare project

Healthcare

HIPAA-aware platforms that put clinicians and patients first.

Discuss a Healthcare project01 / 10

What we build

Patient & provider portals
Telemedicine & scheduling
HL7/FHIR data exchange

Tech & focus

HL7/FHIR
Secure APIs
Patient UX

Featured work

From challenge to measurable impact

Exarth designed and built FlowZen, a modular web ERP that unifies CRM, finance, HR, inventory, supply chain, manufacturing, and projects in one real-time workspace.

FlowZen: all-in-one business ERP workspace

Enterprise · Business ERP

8

core modules

1

shared workspace

Real-time

dashboards

The challenge

Teams were stitching CRM, finance, HR, inventory, and projects across separate tools. No shared source of truth, slow handoffs, and leaders flying blind on live operations.

Unified CRM, finance, HR, and ops in one ERP
Role-based workspaces for each department
Real-time dashboards across the business

View full case study

FlowZen: all-in-one business ERP workspace

Enterprise · Business ERP

Case study

The challenge

Teams were stitching CRM, finance, HR, inventory, and projects across separate tools. No shared source of truth, slow handoffs, and leaders flying blind on live operations.

What we built

Unified CRM, finance, HR, and ops in one ERP
Role-based workspaces for each department
Real-time dashboards across the business
Modular architecture ready to grow

Built with

Next.js
Node.js
PostgreSQL
AWS

The results

8core modules

1shared workspace

Real-timedashboards

Exarth works across our whole product line, from FlowZen and ZenHosp to DocZen and Zenara. Clear scopes, weekly demos and engineers who own their work make them feel like part of our own team.

Solomon, Project Manager · Zengnia Products

The result

What you walk away with

Results your business feels once it's live.

Not just a website a fast, secure product that earns its keep. Here's what changes once it's live.

Offlineworks without signal

Installableadd to home screen

1 codebaseevery device

Fast everywhereApp-like speed on any connection.

Wider reachOne build reaches all devices.

Always updatedUsers always run the latest version.

01

Fast everywhere

App-like speed on any connection.

Instant loads
Works offline
App-like speed

02

Wider reach

One build reaches all devices.

One codebase
All devices
No app store

03

Always updated

Users always run the latest version.

Auto-updates
Always latest
No manual installs

Client voices

Hear it from our partners

Real partners. Real results.The teams who shipped with us, in their own words.

“Exarth understood government workflows and delivered a system our teams rely on every day.”

SZ

Somiya Zaman

Project Manager · Pakistan · ESSI KPK

LMIS brought establishment registration, worker records, RFID cards and contributions onto one secure platform for ESSI. Exarth understood government workflows and delivered a system our teams rely on every day.

SZ

Somiya Zaman

Project Manager · Pakistan · ESSI KPK

Exarth delivered the whole SeedsWild ecosystem: the marketplace with AI seed recommendations, seller wallets, and the mobile apps our growers use across Europe. One team owned web, mobile and product, and it showed in every release.

ES

Emma Suire

Founder & CEO · France · SeedsWild Platforms

Exarth built GR1P and First Line Defense for us, from the AI fit recommendations and the iPad hand-scan kiosk to the admin dashboard and POS. They understand both the AI and the retail floor, and they ship.

RM

Randal Marmet

Founder & CEO · USA · GR1P & First Line Defense

Explore more

Related services from the same practice.

Most projects touch more than one of these. Explore the rest of what our web team builds.

Custom Web ApplicationsFast, secure, responsive web applications tailored to your exact workflow not squeezed into a template.Admin DashboardsReal-time analytics and controls in one clear view so your team can act the moment data changes.Customer PortalsSecure, personalised self-service portals that cut support load and work on every device, around the clock.View all services

View all services

Native feel, web reach

Native feel, web reach

Native feel, web reach

Offline support

Installable & app-like

Push notifications

One codebase

Everything your web app needs

Offline support

Custom-built vs the alternative

From idea to launch

Discover

Design

Build

Launch

Built on a modern, proven stack

Frontend

Backend

Data

Infra

Industries built for real friction

Healthcare

Healthcare

From challenge to measurable impact

What you walk away with

Fast everywhere

Wider reach

Always updated

Hear it from our partners

Custom Web Applications

Admin Dashboards

Customer Portals

E-commerce Platforms

Custom Web Applications

Admin Dashboards

Customer Portals

E-commerce Platforms