RAG vs Fine-Tuning: Choosing the Right LLM Approach for Your Product
Both RAG and fine-tuning improve LLM performance on your specific use case — but they solve different problems. Here's how to choose.
PWA Development$12K – $30K
Progressive Web Apps
Installable, offline-capable web apps with native-like experience
Lighthouse 95+
Performance commitment
8–12w
Typical timeline
Offline-first
Workbox service workers
0
App Store submissions needed
THE CHALLENGE
Sound familiar?
- Your web app isn't installable and users don't come back without a native app prompt
- You need offline functionality but can't justify a native app build
- Your web app breaks when connectivity is poor or intermittent
- You want push notifications on mobile without App Store submission overhead
- App Store and Play Store submission costs are too high for your distribution model
OUR APPROACH
How we solve it
We build PWAs on Next.js with Workbox service workers, web app manifest, push notifications, and offline data sync — achieving native-app install behavior and offline capability without App Store overhead.
What you receive
- Next.js PWA with web app manifest and icons
- Workbox service worker with offline strategies
- Background sync for offline data capture
- Push notification system (server + client)
- IndexedDB offline data store
- Lighthouse 95+ performance audit
- Install prompt implementation and analytics
OUTCOMES
What you walk away with
01
Users can install your app directly from the browser
02
Core functionality works offline or on poor connections
03
Push notifications re-engage users without native app overhead
04
Lighthouse 95+ ensures fast load on all connections
05
Single codebase covers both web and installable app — no app store required
OUR DIFFERENCE
Why PWA Development from Virinchi
Offline-first by design
We define the offline strategy before writing a line of code. Every user action is designed for degraded connectivity.
No App Store dependency
PWAs install from the browser, update instantly, and never wait for App Store review. Ship fixes in minutes, not days.
Domain-specific expertise
We've built PWAs for FinTech, eCommerce, Field Services, and Industrial clients across four markets.
HOW IT WORKS
Our delivery process
01
Offline Strategy
Define which routes, assets, and data need offline support. Choose caching strategies per route.
02
Foundation Build
Next.js app, web app manifest, icons, and theme color — the PWA installability baseline.
03
Service Worker
Workbox configuration, cache strategies, background sync, and push notification setup.
04
Offline Data
IndexedDB integration, offline form capture, and sync-on-reconnect implementation.
05
Performance & Launch
Lighthouse audit, install prompt optimization, and progressive enhancement testing.
Is this right for you?
Best suited for
- Products targeting mobile users who aren't likely to download a dedicated app
- Applications needing offline capability without native app development cost
- B2B tools where users access from multiple devices and networks
- Teams that want push notifications without App Store submission
Not the right fit for
- Products requiring deep native hardware access not available via Web APIs
- Apps where App Store and Play Store presence is a distribution requirement
- Projects where iOS Safari's PWA limitations are a blocking constraint
Engineering Stack
Built with the tools that matter
38 production-grade technologies — every one battle-tested in shipped products.
INVESTMENT
Engagement & pricing
$12K – $30K
8–12 weeks
- Lighthouse 95+ is a delivery commitment
- Offline strategy defined and agreed before development begins
- Push notification server included in all engagements
Ready to start?
Get a detailed proposal within 48 hours. No commitment required.
Frequently Asked Questions
Didn't find what you were searching for? Reach out to us at [email protected] and we'll assist you promptly.
A PWA is a web application that uses modern browser APIs to deliver native-app features — installability, offline functionality, push notifications, and fast load times — without requiring App Store or Play Store distribution.
Yes. Workbox service workers cache application assets and API responses. Background sync queues offline user actions for retry when connectivity returns. The specific offline strategy depends on your data requirements.
Yes, with limitations. iOS Safari supports PWA install (Add to Home Screen), service workers, and offline caching. Push notifications are supported on iOS 16.4+ via Web Push. Some Web API capabilities are more limited on iOS than Android.
FROM OUR CLIENTS
Built with teams who ship
The team took our AI concept from whiteboard to production in 10 weeks. The architecture they designed handles 10x our expected load with no issues.
Insights
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ALSO IN MOBILE & WEB PLATFORMS
Other Mobile & Web Platforms services
iOS App Development
Swift, SwiftUI, and AI-powered iOS apps built for the App Store
Learn moreAndroid App Development
Kotlin, Jetpack Compose, and AI-integrated Android apps for the Play Store
Learn moreReact Native Development
iOS and Android from one codebase — without sacrificing performance
Learn moreWeb Application Development
Next.js web applications that score 95+ on Lighthouse
Learn moreUI/UX Design & Prototyping
User research, wireframes, design systems, and AI UX patterns
Learn moreGlobal Presence
One Studio. Four Markets.
Our engineering team is based in New Delhi. We work with clients across India, USA, UK, and UAE — async-first, with structured weekly delivery sessions in your time zone.
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