Progressive Web App & HTML5 App Experts
Progressive Web App Development Company Building Installable, Offline-Ready Apps
Your app should install from a link and keep working offline. As a progressive web app development company, we build PWAs on web standards - HTML5, CSS3, JavaScript and service workers - that run on iOS, Android, desktop, and the web.
Triple Platform Guarantee
- Write Once, Run Everywhere
- Installable PWA
- Instant Updates
Triple Platform Guarantee:
- Write Once, Run Everywhere
- Installable PWA
- Instant Updates
HTML5 Apps Built
0
+
Cost Savings
0
%
Faster Launch
0
%
Our Service Suite
PWA Apps
Installable
Hybrid Apps
iOS + Android
Web Apps
Any Browser
One Codebase
3 Platforms
Offline Mode
Service Workers
Push Alerts
Web Push
Instant Updates
No Store Delay
HTML5 / CSS3
JavaScript
App-Store Ready
Capacitor
Avg. Project NPS
+72
On-Time Delivery
96%
↑ 4%
Repeat Clients
81%
Trusted By Startups
The Value of a Dedicated Progressive Web App Development Company
A progressive web app development company designs and builds installable, offline-capable apps from web standards - HTML5, CSS3, JavaScript and service workers. A PWA installs to the home screen straight from a link, works without a connection, and sends push notifications, running on iOS, Android, desktop, and the web from one codebase.
An experienced progressive web app development company ships apps that feel native - installable, offline-capable, fast - and the same HTML5 codebase can be packaged for the app stores when you need them. Need compiled native builds instead? See cross-platform app development.
Our Full Progressive Web App Range
Progressive Web Apps (PWA): Installable, offline-ready apps with push notifications that run in any modern browser - no app store required.
Hybrid Mobile Apps: HTML5 codebases wrapped with Capacitor or Cordova for full App Store and Google Play distribution with native device access.
Cross-Platform Apps: One codebase built on web standards running on iOS, Android, desktop, and web - write once, run everywhere.
HTML5 Web Apps & SaaS: Dashboards, portals, and multi-tenant web applications built with React, Vue, and Angular for any browser.
Offline-First & Real-Time: Service workers, caching, and background sync so your app keeps working with poor or no connectivity.
App Packaging & Deployment: PWA publishing plus App Store / Play submission, instant updates, and ongoing cross-platform maintenance.
Why Businesses Choose Our Progressive Web App Team
- Write Once, Run Everywhere: One HTML5/CSS3/JavaScript codebase powers iOS, Android, desktop, and web - no duplicate native builds, no integration tax.
- 60% Lower Cost: A single codebase eliminates separate iOS and Android teams, cutting build and maintenance costs by roughly 40-60%.
- Instant Updates: Ship fixes and features the moment they are ready. PWAs update instantly with no app-store review gatekeeping.
- Installable PWA Reach: Users install straight from the browser - offline support, push notifications, and an app-like experience without a download barrier.
- Senior HTML5 Engineers: No outsourced juniors. The engineer who scopes your app ships it, with performance and accessibility built in from day one.
- Own Your Codebase: Clean, documented HTML5 code you fully own - no black boxes, no lock-in. 81% of clients come back for their next build.
How to Start Your HTML5 App Project
Every engagement starts with a free 45-minute strategy session - no slide deck, no sales script. You bring the goal (a new cross-platform app, a PWA, or a native-to-HTML5 migration) and we map the fastest, most cost-effective path - PWA, hybrid, or a blend.
We are selective about new projects and cap our active client count to keep the senior-engineer-to-project ratio high. That means real availability, senior attention, and honest advice on when HTML5/PWA is the right call versus native.
Why Clients Choose Us
200+
HTML5 Apps Built
60%
Avg. Cost Savings
50%
Faster Launch
5.0
Client Rating
Ready to launch one HTML5 app that runs everywhere?
What We Build
Types of Progressive Web Apps Our Agency Builds
From installable storefront PWAs to offline-first tools and app-store-packaged builds - every kind of progressive web app, on web standards.
Progressive Web Apps
Installable, offline, push
App-Like
Hybrid Mobile Apps
Capacitor / Cordova shell
App Stores
Cross-Platform Apps
iOS, Android, web, desktop
One Codebase
HTML5 Web Apps
Dashboards, portals, SaaS
Any Browser
HTML5 Games
Canvas, WebGL, Phaser
Interactive
Enterprise HTML5 Apps
Internal tools, workflows
Secure
Ecommerce PWAs
Storefronts, cart, checkout
High-Converting
Offline-First Apps
Service workers, caching
5 TECHNOLOGIES
Kiosk & Digital Signage
Fullscreen browser apps
Always-On
Legacy App Migration
Native to HTML5 / PWA
Future-Proof
Not sure which HTML5 app type fits your roadmap? Let's map it together.
Common Challenges
Is Native App Development Draining Your Budget?
These pain points quietly cost you months and budget - and HTML5 solves most of them with a single codebase.
Double the Build Cost
01
Separate native iOS and Android apps mean two teams, two codebases, and two budgets for one product. Costs pile up before you ever ship.
Two Codebases to Maintain
02
Every feature, fix, and update has to be built twice and kept in sync. Maintenance drags on and releases fall out of step across platforms.
Slow App-Store Updates
03
Native releases wait days for app-store review. A critical bug fix can sit in a queue while users keep hitting the broken build.
App-Store Gatekeeping
04
Approval rules, commissions, and rejections put a third party between you and your users - and can block your roadmap overnight.
Limited Reach & Discovery
05
Native apps live only inside app stores. You miss the huge audience that would simply open a link in a browser and use your app instantly.
Fragmented User Experience
06
Two native builds drift apart - different bugs, different behavior, and inconsistent UX across iOS, Android, and the web.
Recognize any of these? Let's fix it with HTML5.
Our PWA Services
6 PWA & HTML5 Services Built to Compound
Each service is a senior HTML5 team. Mix, match, or run them in parallel - every layer makes the others faster and stronger.
PWA Development
01
Installable, offline-ready Progressive Web Apps with push notifications and service workers - app-like experiences that need no app store.
Hybrid App Development
02
HTML5 apps wrapped with Capacitor or Cordova for full App Store and Google Play distribution, with native access to camera, GPS, and more.
HTML5 Web App Development
03
Dashboards, portals, and SaaS web apps built with React, Vue, and Angular - fast, responsive, and running in any modern browser.
UI/UX & Cross-Platform QA
04
Responsive, accessible design plus rigorous testing across iOS, Android, desktop, and every major browser so your app behaves everywhere.
Offline & Push Integration
05
Service workers, background sync, caching, and web push so your HTML5 app stays fast and functional even with poor or no connectivity.
App Packaging & Deployment
06
PWA publishing plus App Store and Google Play submission, instant web updates, and ongoing cross-platform maintenance.
Need an HTML5 app that combines several of these? Let's scope it together.
Why Choose Us
The Business Results You Get With Progressive Web Apps
What you get when one senior team owns your app across web, iOS, and Android - from a single codebase.
60% Lower Cost
01
One HTML5 codebase replaces separate native iOS and Android builds, cutting development and maintenance costs by roughly 40-60%.
2-3x Faster Launch
02
Building once instead of three times compresses your timeline - senior teams ship your cross-platform app in weeks, not quarters.
One Codebase, 3 Platforms
03
Write once on web standards and run on iOS, Android, desktop, and the web - every platform stays perfectly in sync.
Instant Updates
04
Push fixes and features the moment they are ready. PWAs update instantly with no app-store review holding you back.
Wider Reach & PWA Install
05
Reach users in the browser and let them install your app from a link - offline support and push included, with no download friction.
Own Your Codebase
06
Clean, documented HTML5 you fully own - no lock-in. Most clients come back, because the results hold up long after launch.
Ready for an HTML5 app that delivers real results?
Our Process
From Idea to Launched HTML5 App in 6 Proven Steps
A proven process that catches issues early and gets your cross-platform app live faster.
Strategy
Free discovery: goals, target platforms, PWA vs hybrid
Design
UX research, wireframes, responsive HTML5 UI
Build
HTML5, CSS3 & JavaScript in agile sprints with weekly demos
Integrate
Device APIs, offline, push notifications, payments
Launch
Cross-platform QA, then PWA and app-store deploy
Optimize
Performance tuning, instant updates, ongoing support
Want to see how this maps to your app?
Technology Stack
The PWA & HTML5 Stack We Build On
Modern web-standards frameworks and tooling across HTML5, PWA, hybrid, and cross-platform app development.
Web & Backend
Next.js / React
Node.js / Vue
Python / Django
.NET / Java
TypeScript
Mobile & Cross-Platform
Swift / iOS
Kotlin / Android
React Native
Flutter
Ionic / HarmonyOS
AI / ML / Data
OpenAI / Claude
Gemini / Qwen
PyTorch / TensorFlow
Hugging Face
SageMaker / Vertex AI
Ecommerce & CMS
Shopify / Plus
BigCommerce
WooCommerce
Magento / OpenCart
Webflow / Framer
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Technology Stack
The PWA & HTML5 Stack We Build On
Modern web-standards frameworks and tooling across HTML5, PWA, hybrid, and cross-platform app development.
Web & Backend
Next.js / React
Node.js / Vue
Python / Django
.NET / Java
TypeScript
Mobile & Cross-Platform
Swift / iOS
Kotlin / Android
React Native
Flutter
Ionic / HarmonyOS
AI / ML / Data
OpenAI / Claude
Gemini / Qwen
PyTorch / TensorFlow
Hugging Face
SageMaker / Vertex AI
Ecommerce & CMS
Shopify / Plus
BigCommerce
WooCommerce
Magento / OpenCart
Webflow / Framer
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Industries We Serve
Progressive Web Apps for 50+ Industries, From Startups to the Fortune 500
Progressive web app expertise across the industries where instant reach and offline speed compound revenue.
Fintech & Banking
Payments, KYC, regulatory tech
Healthcare & HealthTech
HIPAA, telehealth, clinical SaaS
Retail & E-Commerce
DTC, B2B, marketplace, headless
EdTech & Learning
LMS, course platforms, proctoring
Manufacturing & Industrial
IoT, predictive maintenance, MES
Logistics & Supply Chain
Routing, fleet, warehouse, B2B
Legal & LegalTech
Document AI, contract analysis
Media & Entertainment
Streaming, content AI, audience
We know your industry. Let's build an HTML5 app that leads it.
How We Compare
HTML5 & PWA vs Native vs Cross-Platform
An honest look at your app development options.
| Capability | Native (iOS + Android) | React Native / Flutter | Cheap Hybrid | Stallyons HTML5 / PWA |
|---|---|---|---|---|
| One Codebase, All Platforms | ✕ Two Codebases | One (Compiled) | Partial | One Web Codebase |
| Build & Maintenance Cost | ✕ 2x Cost | Medium | Low Quality | 60% Lower |
| Instant Updates (No Review) | ✕ Store Review | ✕ Store Review | Sometimes | Push Instantly |
| Installable + Offline (PWA) | Native Only | Add-On | Basic | Full PWA |
| Web + Desktop Reach | ✕ Mobile Only | ✕ Mobile Only | ✕ Mobile Only | Runs Everywhere |
| App-Store Distribution | Yes | Yes | Depends | Stores + Web |
| Time-to-Launch | ✕ Slow (2x) | Medium | Drift-Prone | 2-3x Faster |
| You Own the Code | Maybe | Maybe | Partial | 100% Yours |
See the HTML5 advantage for yourself
Complete Engagement
Everything You Get With Progressive Web App Development
From Strategy to Launch to Growth All Under One Roof
Here's everything included when you build your HTML5 app with Stallyons:
Complete HTML5 App Package: No Hidden Fees, No Surprises.
Every engagement includes all 8 components above. One codebase, one senior team, one predictable price - running on iOS, Android, and the web.
🔒 No obligation. We'll deliver a detailed proposal within 48 hours.
Plus, Get These Free Bonuses
Free HTML5 App Audit
A 30-point review of your app idea or existing build - platform fit, performance, PWA readiness, and cost gaps. Yours free, whether or not you work with us.
Included Free
App Roadmap & Estimate
A phased build plan with milestones, a PWA-vs-hybrid recommendation, and a transparent, itemized estimate for your HTML5 app.
Included Free
Free Prototype Sprint
For qualifying projects, a working HTML5 prototype at no cost - so you see our quality before committing to the full build.
Included Free
Risk-Free Partnership
Our Triple Platform Delivery Guarantee
We stand behind every HTML5 app with commitments that protect your investment.
01
Runs on Every Platform
Your app works flawlessly on iOS, Android, and the web from one codebase - or we fix it free. One build, every platform, guaranteed.
02
Battle-Tested Quality
Senior engineers, code-review gates, automated tests, and cross-platform QA across every major browser and device - with clean, documented code you own.
03
Outcome-Focused Delivery
We price on the outcomes you care about - launch dates, performance targets, and cost savings. If we miss, we keep working until we hit them.
Build your HTML5 app with zero risk, backed by our Triple Platform Guarantee.
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"We came to Stallyons after burning two years and four vendors on a multi-platform launch that kept slipping. They scoped it end-to-end — web app, iOS, Android, an AI summarization layer, and a Shopify integration — and shipped it in 22 weeks. One team, one budget, one quality bar. We've handed them three more engagements since."
Mark Sawyer
CEO/Founder
PlatinumLED
"Stallyons rebuilt our customer-facing portal, integrated three legacy systems, shipped an AI document analysis pipeline, and brought our compliance posture to SOC 2 — all under one engagement. The senior engineers on the team have shipped at companies five times our size. It's the best vendor decision we've made in a decade."
Mark Sawyer
CEO/Founder
PlatinumLED
FAQ
Frequently Asked Questions About Progressive Web Apps
A progressive web app typically costs 40-60% less than building separate native iOS and Android apps. One codebase serves web, iOS, and Android, so you eliminate duplicate development and maintenance. You get a detailed, transparent estimate after a free consultation.
For most business and content apps, yes. Modern PWAs built with optimized frameworks and service workers deliver smooth animations, fast loads, and a near-native feel. For graphics-heavy 3D games or hardware-intensive apps, we will honestly tell you when native is the better fit.
Yes. Through modern Web APIs and Capacitor/Cordova bridges, a PWA accesses the camera, GPS, push notifications, microphone, accelerometer, offline storage, and more – nearly everything native apps can reach.
Absolutely. Using Capacitor or Cordova, we package your PWA into a native shell and submit it to both the Apple App Store and Google Play, meeting all their guidelines. If your site is already finished and you only need it in the stores, converting your website to an app is often the cheaper route.
A PWA (Progressive Web App) runs in the browser and installs to the home screen with no app store – instant updates, offline support, and push built in. A hybrid app wraps the same HTML5 codebase in a native shell for App Store and Play distribution. We recommend the right mix for your goals.
A typical progressive web app launches in 6-16 weeks depending on complexity. Simple apps with core features can ship in 4-6 weeks; feature-rich platforms take 3-6 months. You get a detailed timeline after your initial consultation.
We build with React, Vue.js, Angular, and Ionic on the frontend, paired with Capacitor or Cordova for native device access. We use Tailwind CSS for styling, TypeScript across projects for reliability, and service workers for offline and push.
Yes. We offer maintenance retainers covering updates, security patches, performance monitoring, new features, and cross-device testing – and because it is a PWA, we can push most updates instantly without waiting on app-store review.
Still have questions? Let's talk.
Schedule an appointment with us today!
Ready to Launch Your Progressive Web App ?
Get a free 45-minute strategy session. Bring your goal - a new PWA, an offline-first rebuild, or a site-to-PWA migration - and walk away with a clear path from senior web engineers.
