Customers won't download another app
Asking people to visit an app store and install hundreds of megabytes loses most of them at the first step.
Mobile Web App Development App-like experiences in the browser, no download needed.
We build progressive web apps (PWAs) that install to the home screen, open full-screen, work offline and send push notifications, from one codebase that runs on Android, iPhone and desktop. It's the fastest route to an app your customers and staff will actually use, from a team with 21 years of web and mobile experience.
- Progressive web apps
- Install to home screen
- Offline support
- Push notifications
- One codebase, every device
- App-store optional
21+years building web and mobile software
7500+projects delivered for clients in India and abroad
1codebase for Android, iPhone and desktop browsers
6–10 wkstypical first release of a progressive web app
When a mobile web app makes sense
Six reasons businesses choose a PWA over a native app.
Native apps are powerful but expensive to build twice and hard to get people to download. A progressive web app solves many of the same problems for less effort.
Two native apps, two budgets
Separate Android and iOS apps double development, testing and every future change.
Waiting on app-store reviews
Urgent fixes and price changes sit in review queues instead of reaching users the same day.
Users on patchy networks
Field staff and customers in low-signal areas lose their work when the connection drops.
A mobile website that feels like a website
Pages reload on every tap, there's no home-screen icon and nothing brings users back.
Internal tools on staff phones
Sales, delivery and service teams need a quick mobile app without managing installs on every device.
Mobile web app development services
Progressive web apps, built for real business use.
From customer-facing ordering apps to field-staff tools, our mobile web app development covers design, front end, back end and launch.
Progressive Web App Development
Installable, full-screen PWAs with a web app manifest, service worker and app-like navigation.
Read more about Progressive Web App DevelopmentOffline-First Apps
Cached screens, local data storage and background sync so the app keeps working without a signal.
Read more about Offline-First AppsPush Notifications
Web push for order updates, reminders and offers on Android, desktop and installed iPhone web apps.
Read more about Push NotificationsWebsite-to-PWA Conversion
Add install, offline and push features to an existing responsive website or web application.
Mobile UI/UX Design
Bottom navigation, gestures, skeleton screens and transitions designed to feel native on a phone.
Read more about Mobile UI/UX DesignAPIs & Back End
Secure REST APIs, authentication, payments and admin panels powering the web app.
Read more about APIs & Back EndField & Staff Apps
Order taking, attendance, delivery routes and service checklists for teams on the move.
Trusted Web Activity (Play Store)
Package your PWA for listing on Google Play without building a separate Android app.
Support & Enhancements
Monitoring, browser-update testing, new features and performance tuning after launch.
Installable progressive web apps
An icon on the home screen, without an app store.
A PWA is a web application that browsers let users install with a single tap. It opens full-screen with your icon and splash screen, remembers the user's login and updates itself silently whenever you release a change. There's nothing to download from a store and no review queue to wait for.
- Web app manifest with icons, theme colours and splash screens
- Custom install prompts timed for engaged users
- Full-screen, standalone display with app-style navigation
- Instant updates the moment you deploy
Offline support & push notifications
Keeps working when the signal drops, and brings users back.
Service workers cache the app shell and key data, so screens open instantly and forms can be filled offline, then synced when the connection returns. Web push notifications let you send order updates, delivery alerts and reminders to Android phones, desktops and iPhones where the web app has been added to the home screen.
- Service-worker caching strategies chosen per screen
- IndexedDB storage and background sync for offline forms
- Web push with user-controlled permissions and topics
- Graceful offline pages instead of browser error screens
App-like UI from Sysfo's own products
Interfaces built for daily use on real phones.
Our milk delivery platform lets customers manage subscriptions, pause or skip deliveries and top up a wallet from a browser, with a clean, app-like interface. We bring the same patterns, such as clear actions, status badges, bottom navigation and fast transitions, to every mobile web app we design.
- Subscription, wallet and order flows designed for one hand
- Status badges and clear primary actions on every card
- Dark mode, large tap targets and readable type
- Skeleton loading so screens never feel blank
APIs, payments & admin
A secure back end and admin panel behind the app.
Every mobile web app needs a reliable server side. We build REST APIs in ASP.NET Core or Node.js with token-based authentication, integrate UPI and card payments, SMS and WhatsApp messaging and maps, and give your team a web admin panel to manage users, orders, content and reports.
- REST APIs with JWT authentication and role-based access
- Razorpay, PayU or Cashfree payments and wallet logic
- SMS, WhatsApp, email and Google Maps integrations
- Admin dashboard with reports and audit logs
Frameworks & performance
Modern frameworks, tuned for mid-range phones.
We build PWAs with React, Next.js, Angular or Vue and Workbox for service workers, then test them on the mid-range Android handsets most Indian users actually carry. Code splitting, image optimisation and small bundles keep the first load fast and every later visit near-instant.
- React, Next.js, Angular or Vue, chosen to fit your team
- Workbox service workers and Lighthouse PWA checks
- Code splitting and lazy-loaded routes for small bundles
- Tested on budget Android phones and iPhones
What you get
A production-ready web app, plus everything behind it.
You get a live, installable app on your domain, the admin panel to run it and all the code and documentation, with no per-user licence fees.
- Clickable mobile prototype approved before development
- Installable PWA with manifest, icons and service worker
- Offline caching, background sync and push notifications
- REST APIs and a web admin panel with reports
- Lighthouse and real-device test results
- Optional Google Play listing via Trusted Web Activity
- Source code, API documentation and deployment guide
App release dashboardSample output · figures are illustrative
Release checks
Lighthouse performance92
Installable PWAPass
Repeat-visit load0.6s
Offline screens100%
Accessibility95
Release plan
PrototypeWeeks 1–2
- User flows & screens
- Clickable prototype
First releaseWeeks 3–8
- Core screens & APIs
- Install & offline
- Admin panel
GrowAfter launch
- Push campaigns
- Play Store listing
How we build mobile web apps
Our progressive web app development process.
Short sprints with a working build to try on your own phone every week, and a fixed quote for the first release.
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1
Feasibility call
freeWe check whether a PWA, a native app or a hybrid app best fits your users, features and budget.
-
2
Prototype
1–2 weeksUser flows and a clickable mobile prototype you can test on your own phone before code is written.
-
3
Build in sprints
4–6 weeksScreens, APIs, admin panel, offline and push features delivered in weekly demos.
-
4
Test on real devices
about 1 weekAndroid and iPhone handsets, desktop browsers, poor networks and install flows tested and fixed.
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5
Launch & grow
ongoingGo-live on your domain, optional Play Store listing, then monitoring and new features.
Engagement models
Start small, then grow the app.
Most clients start with a prototype or a first release, then add features in monthly sprints.
Feasibility call
Free
Find out if a PWA suits your idea.
- PWA vs native vs hybrid advice
- Feature and platform review
- Rough timeline and next steps
PWA first release
Fixed price
A complete, installable app with back end and admin.
- Prototype, design and development
- Offline, install and push features
- Real-device testing and launch
Website-to-PWA upgrade
Per project
Add app features to a site you already have.
- Manifest and service worker
- Offline pages and caching
- Push notification set-up
Ongoing development
Monthly
A team that keeps improving the app.
- Agreed sprint capacity each month
- Browser-update testing
- Monitoring and support
Why Sysfo
Mobile web app developers who also build native apps.
Because we build PWAs, native Android and iOS apps and Flutter apps, we recommend the approach that fits, not the only one we know.
Unbiased platform advice
We'll tell you plainly when a PWA is enough and when Bluetooth, background tasks or heavy device features need a native app.
Tested on the phones people own
Budget and mid-range Android handsets and recent iPhones, on throttled networks, not just a fast laptop.
Full stack in one team
Front end, APIs, database, hosting and admin panel are designed and built by the same people.
Proven in field operations
Our delivery, collection and service products are used daily by staff on the move, often on weak signals.
Fast to market
One codebase and no store review means a first release in weeks and fixes the same day.
Yours to keep
Source code, domain and server accounts are in your name, with no per-user or per-device licence fees.
FAQ
Mobile Web App Development — frequently asked questions
What is mobile web app development?
Mobile web app development is building an application that runs in the phone's browser but looks and behaves like an installed app. Modern mobile web apps are usually progressive web apps (PWAs): they can be added to the home screen, open full-screen, work offline and send push notifications, all from a single codebase that also runs on desktop.
What is the difference between a PWA and a native app?
A native app is built separately for Android and iOS and installed from an app store. A PWA is built once with web technologies and installed straight from the browser. PWAs are quicker and cheaper to build and update, while native apps still have deeper access to device features such as Bluetooth, background location and some sensors.
Do progressive web apps work on iPhone?
Yes. Safari on iPhone and iPad supports installing a PWA to the home screen, full-screen display, offline caching and, since iOS 16.4, web push notifications for installed web apps. Some features still behave differently from Android, so we design around them and test on real iPhones as part of every mobile web app development project.
How much does mobile web app development cost?
It depends on the number of screens and user roles, offline and push requirements, payments and integrations, and the admin panel and reports you need. After a free feasibility call and a review of your requirements, we provide a fixed, itemised quote for the first release, so you know the full cost before development starts.
How long does it take to build a progressive web app?
A typical first release takes six to ten weeks: one to two weeks for user flows and a clickable prototype, four to six weeks of development in weekly sprints, and about a week of real-device testing and launch. Converting an existing website into a PWA can take as little as two to three weeks.
Can a PWA be listed on Google Play or the App Store?
A PWA can be published on Google Play using a Trusted Web Activity, which wraps the web app in a lightweight Android package. Apple's App Store generally requires more native functionality, so for an iOS store listing we usually recommend a hybrid app built with Flutter or React Native. Many businesses simply share an install link instead.
Can you turn my existing website into a mobile web app?
Usually, yes, provided the site is already responsive. We add a web app manifest, a service worker for caching and offline pages, install prompts and, if needed, push notifications. If the site isn't mobile-friendly yet, our responsive website development team rebuilds it first, then we add the app features on top.
Who owns the code of the web app?
You do. On completion we hand over the full source code, API documentation, database and deployment instructions, and the domain and server accounts stay in your name. There are no per-user or per-device licence fees. Many clients keep us on a monthly plan for enhancements, but you're free to take development in-house.
Do you provide mobile web app development outside Lucknow?
Yes. We are based in Lucknow and provide mobile web app development for startups and businesses across India and abroad. Prototypes and weekly builds are shared by link, so you can try every version on your own phone, and progress meetings happen over video calls.
Plan your web app
Book a free PWA feasibility call.
Tell us about your app idea, your users and the devices they use. A senior developer will call you back within one business day to discuss whether a PWA, native or hybrid app fits best.
- Free feasibility call
- Honest PWA vs native advice
- Clickable prototype first
- Fixed quote for the first release
- Weekly builds on your phone
- You own the source code