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Mobile App · 2025

Nextword

The AI word-chain game that turns writing into comics — a mobile app for young language learners.

A full playthrough — pick words, generate panels, get AI feedback.

Overview

Writing is the most effective way to learn a language — and the most intimidating. Nextword removes the blank page: instead of writing, you choose. The AI offers a handful of words, you pick one, your choice moves the story forward, and every sentence you build is drawn into a comic panel.

Finish four panels and you have a complete story — written by a learner, illustrated by AI, with the same character carried consistently across every scene. A five-dimension AI report then scores the writing on grammar, vocabulary, creativity, coherence, and style, and the round ends with a collectible trading card.

The product is a Flutter app talking to a Next.js API layer (Prisma, Auth0, Stripe) that orchestrates several Gemini models for word suggestion, story analysis, and image generation. It was demoed to students and parents at the HKPC Summer TechEd Fest 2025.

Highlights

  • Word-by-word writing mechanic that turns a blank page into a low-pressure choice
  • AI-generated comic panels with a consistent character across the whole story
  • Five-dimension writing feedback: grammar, vocabulary, creativity, coherence, style
  • Collectible cards with rarity tiers for retention
  • Three modes (Free Flow, Story, Event) across English and Traditional Chinese
  • Cross-platform Flutter client + Next.js/Prisma backend orchestrating multiple Gemini models

Screens

Pick your character — your avatar stars in every comic panel.
Pick your character — your avatar stars in every comic panel.
Build sentences word by word from AI-suggested options.
Build sentences word by word from AI-suggested options.
Each finished sentence becomes a comic panel.
Each finished sentence becomes a comic panel.
Four panels, one story — written by the learner, drawn by AI.
Four panels, one story — written by the learner, drawn by AI.
Earn a collectible card with rarity tiers.
Earn a collectible card with rarity tiers.
Five-dimension AI writing feedback closes each round.
Five-dimension AI writing feedback closes each round.
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