Why Duolibro?
Dual-Language Sentences
Every sentence is aligned. Toggle to see the native translation instantly—no copy/paste into a translator.
Adaptive Difficulty
Select length and level (Beginner → Advanced). The AI adjusts vocabulary and structure to your stage.
Credit-Based Generation
Use credits to generate fresh stories on demand. Own your reading queue and explore unlimited topics.
Instant Covers
AI-generated cover art for each story keeps your library visual and memorable.
Ever‑Growing Bookstore
All generated books become part of the shared library—explore an expanding bookstore with stories created by the community.
Reviews & Ratings
Rate stories and see community feedback to prioritize your next read.
How It Works
- Pick a topic or enter a creative prompt.
- Select your level & length.
- Generate the story (uses 1 credit).
- Read & toggle translations sentence by sentence.
- Track vocabulary naturally through context.
Technology
Powered by OpenAI models, Firebase (Auth, Firestore, Functions, Storage), Stripe for secure purchases, and Flutter for a fast cross‑platform experience.
2
Languages per sentence
3
Difficulty levels
∞
Prompt creativity