Built with the best tools for the job.

Next.js

Full-stack React framework (App Router)

App Router gives us server components, layouts, and file-based routing out of the box.

React

UI component library

The most mature ecosystem for building interactive UIs with server + client component support.

TypeScript

Type-safe JavaScript across frontend and backend

Catches bugs at compile time and makes refactoring across large codebases safe.

Tailwind CSS

Utility-first styling framework

Enables rapid UI iteration with consistent design tokens without leaving the markup.

Convex

Reactive backend: database, queries, mutations, and actions

Real-time reactivity, TypeScript-native schema, and serverless functions in one platform.

NextAuth.js

Authentication (sessions, OAuth providers)

Battle-tested auth for Next.js with minimal configuration and provider flexibility.

Groq

Ultra-fast speech-to-text transcription

Best-in-class inference speed for Whisper-compatible STT with competitive accuracy.

ElevenLabs

AI narration and text-to-speech

Natural-sounding voice narration to bring storybook chapters to life.

Cloudflare R2

Object storage for photos, audio, and exports

Zero egress fees and S3-compatible API make it ideal for user-generated media at scale.

Sentry

Error monitoring and performance tracing

Catches exceptions in production with full stack traces and release tracking.

Stripe

Subscription billing and payment processing

Best-in-class developer experience for subscriptions, webhooks, and the billing portal.

Resend

Transactional email delivery

Modern API-first email with React Email templates and excellent deliverability.

Unsplash

Free high-quality stock photography

Huge library of CC0-licensed photos to enrich chapters without copyright concerns.

Pexels

Additional stock photography and video

Complements Unsplash with a separate library for broader coverage.

Vercel

Deployment and edge hosting for the Next.js app

First-class Next.js support with zero-config deployments, preview URLs, and global CDN.

Vitest

Unit and integration testing

Vite-native test runner with near-zero config and Jest-compatible API.

Playwright

End-to-end browser testing

Cross-browser E2E tests with auto-wait and first-class TypeScript support.