Offline PWA & Next.js 16 / React 19

Hablar Audio Shadowing PWA

EdTech, Audio Learning & Progressive Web Apps

Offline-first audio shadowing app with SM-2 spaced repetition and on-device speech synthesis.

Campaign Objective & Strategy

Offline-first language learning PWA using audio shadowing technique, scientific SM-2 spaced repetition, on-device browser TTS, built with Next.js 16 and React 19.

Production & Content Scope

Next.js 16, React 19, Serwist service worker, SM-2 spaced repetition algorithm, Web Speech API, MongoDB.

Content Reach & Growth Metrics

Next.js 16

Modern React 19 Engine

100%

Offline Capability

Produced Content Deliverables

SM-2 Spaced Repetition Core

Calculates optimal review intervals based on user recall difficulty and retention curve.

Offline-First Service Worker Cache

Zero network latency review sessions via Serwist service worker background caching.

Campaign Visuals & Media Production