SERVICE / PWA

Turn the Web into an App.
The Fastest Path to App‑Like Deployment.

Transform your website into an instant touchpoint for users. A PWA is not a replacement for native app development— it enables your existing website to behave like an app with no App Store review, no OS‑specific builds, and no additional development teams required. Even web production companies can start offering “app‑like experiences” today.

High‑quality coding, WordPress development, and PWA implementation by a markup engineer based in Mito, Ibaraki.

FOR DIRECTORS

A PWA is not “app development”—it’s an extension of the Web. That’s why it’s easy to propose.

No App Store review. No OS‑specific builds. A PWA transforms your existing website into an app‑like experience, dramatically improving user retention. Many assume PWA simply means “Add to Home Screen,” but that is only a fraction of its capabilities. Real PWAs combine Web Push, API integration, offline behavior, and background sync to create a true multi‑channel experience. In other words, PWAs extend the Web while delivering app‑level engagement—making them highly accessible for production companies to propose.

No Store Review: Install instantly via URL—no app marketplace required.
Fully compliant with the Web App Manifest standard. Installation prompts are controlled via Service Workers, enabling direct deployment without relying on native app stores.
Push Notifications: Increase return visits with Web Push.
Implemented using the Web Push API and Firebase Cloud Messaging (FCM). Service Worker “push” events allow notifications to be received even when the browser is closed.
Offline Support: Reliable access regardless of network conditions.
Cache Storage API with Cache‑First or Stale‑While‑Revalidate strategies. Service Workers simulate HTTP 200 responses offline, ensuring continuous rendering.
SEO & AI Visibility: Performance built for the AI‑search era.
Strict JSON‑LD structured data and Core Web Vitals optimization (LCP / INP). Enhances semantic extraction and indexing efficiency for search engines and LLM‑based crawlers.

Workflow

Audit & Planning

I assess your existing website for PWA compatibility and define the strategic foundation—offline‑priority content, push notification timing, and the overall app‑like behavior required for your goals.

Core Implementation

Implementation of the Web App Manifest and Service Worker. I configure strict HTTPS requirements, caching strategies, and background behaviors to ensure stable, predictable PWA performance across devices.

Verification

Comprehensive testing using Lighthouse PWA audits, followed by real‑device verification on iOS and Android. Installation behavior, offline rendering, and push notifications are validated before final delivery.

PWA Implementation

A single hourly rate for all PWA development. From core installation features to advanced runtime behavior, everything is engineered with stability, performance, and cross‑device reliability.

PWA Engineering

PWA Development

$65 / hour

Comprehensive PWA implementation—Manifest, Service Worker, cache strategy, offline behavior, push notifications, and iOS/Android verification.

Manifest & Service Worker
Smart Cache Strategy
Web Push API (FCM)
Background Sync
iOS / Android Verification

All project fees are calculated based on estimated hours. Cache logic, runtime behavior, and device‑specific adjustments are included when required for stable PWA performance.

Short-Deadline Projects

Availability for urgent builds depends on current workload. Share your deadline and scope, and I will determine the fastest feasible approach while maintaining technical quality.

Why a Unified Hourly Rate?

I believe in fairness and transparency. By keeping a flat hour rate, you pay only for the actual engineering value delivered. Whether it’s a high-speed landing page or a complex CMS, you receive the same level of senior expertise without hidden premiums.

FAQ

Do you support communication in English?

Yes. All communication can be handled in English.
AI‑assisted translation is used for speed, and all technical terms are manually verified to avoid misunderstandings.

How will we communicate during the project?

All communication is text‑based (chat or written messages).
This ensures a clear record of decisions, reduces ambiguity, and allows smooth progress across time zones.

Is voice or video communication required?

NThe entire workflow can be handled accurately through text‑based communication, from specifications to feedback and delivery.
For this reason, video or voice calls are not part of my standard process.

What happens if there is a complex technical issue to discuss?

For complex logic, I prefer Asynchronous Communication (Slack or Email) using screen recordings or annotated screenshots. This allows both parties to review technical details precisely without the pressure of a live call, leading to fewer errors and more efficient problem-solving.

How is a PWA different from native app development?

A PWA enables your website to behave like an app. It does not require native app development skills, but it is far more than a simple “Add to Home Screen” feature. Proper cache control, update detection, and OS‑specific behavior must be handled correctly—otherwise issues like “the site never updates” can occur. I handle all internal PWA logic so production companies can offer stable app‑like experiences without additional engineering teams.

Can an existing WordPress site be converted into a PWA?

Yes. Your current theme and design can remain intact while adding full PWA functionality.

Do PWAs support push notifications on iOS (iPhone)?

Yes. As of iOS 16.4 and later, Web Push is supported. iPhone users can receive notifications similar to native apps.

Is App Store or Google Play registration required?

No. PWAs install directly from the browser using “Add to Home Screen,” eliminating the need for App Store reviews, fees, or OS‑specific builds.

How much offline functionality is possible?

Pages and static assets (images, CSS, JS) can be cached locally, allowing users to continue browsing even in unstable network environments such as subways or rural areas.

Are PWAs beneficial for AI search engines like Perplexity?

Yes. Faster load times and clean code structure significantly improve how AI search engines crawl, interpret, and cite your content. PWAs naturally enhance performance metrics that modern AI‑driven crawlers prioritize.

PWA Core

Service Worker (Caching / Offline Behavior)
Web App Manifest (Add to Home Screen)
Fetch / Cache API
Install / Update Flow Engineering
HTTPS Requirements & Security

Performance

Core Web Vitals Optimization (LCP / CLS / TTI)
Image Optimization (WebP / AVIF)
Lightweight Code Architecture (Vanilla JS)
Lazyload / Preload / Prefetch Strategies
Client-side Processing for Speed & Stability

Web APIs

File API (Image / PDF Processing)
Canvas / WebGL Rendering
Geolocation / Device Orientation
Clipboard / Web Share API
IndexedDB / LocalStorage

CONTACT

I help resolve implementation uncertainties and accelerate production.
Consultations welcome even before specifications are finalized.

For project inquiries, I am available on:

These platforms provide a secure and transparent workflow for both sides.

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Turn the Web into an App. The Fastest Path to App‑Like Deployment.