Prose Meld - AI Writing Companion App | Flutter + NestJS Full-Stack

Prose Meld - AI Writing Companion App | Flutter + NestJS

A complete, production-ready AI writing platform built with Flutter and NestJS. Combines 8 AI writing tools, a full-featured document editor, 20 templates, gamification, and subscription monetization — available on iOS and Android.

🚀 Key Features

✨ 8 AI Writing Tools

• Generate — Create content from scratch using 20 purpose-built templates

• Rewrite — Rephrase text while preserving meaning

• Tone Adjustment — Shift across 7 presets (professional, casual, persuasive, creative, academic & more)

• Extend — Expand short text into richer long-form content

• Summarize — Condense long writing into key points

• Grammar Check — Deep analysis with readability scores and style suggestions

• Improve — Enhance clarity, flow, and overall quality

• Title Suggestions — Generate compelling titles for any piece

📝 Full-Featured Document Editor

• Auto-save — never lose your work

• Live word count, character count, and reading time

• Document version history with one-tap restore

• Organize documents into color-coded projects with custom icons

📋 20 Ready-Made Templates

• Blog Posts, Emails, Social Media, Business, Marketing

• Academic, Creative Writing, Career (resumes, cover letters)

🏆 Writing Analytics & Gamification

• Daily word count tracking and writing streak monitoring

• Weekly and monthly writing habit reports

• 15 unlockable achievements and 10 XP levels

• Daily & weekly challenges to keep writers motivated

• Global leaderboard — compete with writers worldwide

⚙️ More Features

• Offline Support — write without internet, syncs when back online

• Multi-Language — English, Spanish, French, German, Italian, Japanese

• Push Notifications — daily writing reminders via FCM

• Guided Onboarding — set writing preferences and goals on first launch

• In-App Feedback — submit feedback with screenshots

• Real-Time Sync — Socket.io WebSocket gateway

🛠️ Tech Stack

📱 Mobile App (Flutter)

• Flutter (Dart) — iOS & Android

• State management: Riverpod · Navigation: GoRouter

• Networking: Dio + Socket.io (real-time) · Auth: Google Sign-In, Apple Sign-In, Email/OTP

• Payments: Native IAP (App Store + Google Play) · Notifications: FCM + Local

• UI: Lottie animations, FL Chart, Shimmer loading effects

⚙️ Backend (NestJS)

• NestJS (TypeScript) — 18 modules

• Database: PostgreSQL · Cache: Redis · Job queue: BullMQ

• AI: OpenRouter (Claude 3.5 Haiku) · Real-time: Socket.io WebSocket Gateway

• Storage: AWS S3 · Email: AWS SES · Auth: JWT + Passport.js

• Swagger / OpenAPI docs auto-generated

💳 Subscription Plans

• Free — 5 AI generations/day, 10 documents, 3 projects, full editor access

• Premium Monthly — $9.99/mo — 50 AI generations/day, unlimited docs & projects, full analytics

• Premium Yearly — $69.99/yr — Same as monthly, save 42%

• Early bird pricing · 7-day free trial · Apple IAP + Google Play Billing

📦 What's Included

• 📱 Full Flutter source code (iOS + Android)

• ⚙️ NestJS backend — 18 modules, PostgreSQL migrations

• 📋 Environment config templates (.env.example)

• 📖 Swagger API documentation (auto-generated)

✅ Requirements

• Flutter 3.x · Android Studio / Xcode

• Node.js 18+ · PostgreSQL 14+ · Redis 6+

• AWS account (S3 + SES) · Firebase project · OpenRouter API key

✍️ 8 AI tools. 20 templates. Gamified writing.  |  📊 18 API modules · Real-time sync · iOS + Android