# Sentence Monster

> Turn vocabulary into sentences with AI writing practice, feedback, and personalized review. Learn 15 languages with Sentence Monster on the web and iOS.

Sentence Monster is a language-learning service that helps you turn vocabulary you recognize into sentences you can write. Practice with AI-generated sentence prompts, answer feedback, and personalized vocabulary review on the web and in the Sentence Monster iOS app.

Public documentation is available without an account. Interactive practice requires sign-in. Account, authentication, and shared learning-history URLs are application flows, not public product documentation.

## Product documentation

- [Product overview](https://www.sentencemonster.com/index.md): What Sentence Monster is, how practice works, and its 15 learning languages.

- [Learning guide](https://www.sentencemonster.com/guide/index.md): Getting started, a sentence example, personalized review, supported languages, and frequently asked questions.

- [Readable learning guide](https://www.sentencemonster.com/guide/): The same guide as a public HTML page.

## Official services

- [Sentence Monster website](https://www.sentencemonster.com/): Official web service.

- [Sentence Monster for iOS](https://apps.apple.com/us/app/sentence-monster/id6769966713): Official App Store listing by MINHYEONG YU.

## Policies

- [Privacy Policy](https://www.sentencemonster.com/privacy): How account information, learning history, and privacy requests are handled.

- [Terms of Service](https://www.sentencemonster.com/terms): Account rules, subscriptions, service limitations, and the operator Goyodrive.

## Optional

- [Full product guide](https://www.sentencemonster.com/llms-full.txt): The complete learning guide in a single text file.

- [Sitemap](https://www.sentencemonster.com/sitemap.xml): Canonical public pages.

- [Robots policy](https://www.sentencemonster.com/robots.txt): Crawling policy.