Documentation

Everything you need to use Language Den. Browse the sections below or use the sidebar to jump to a specific topic.

Getting Started

New to Language Den? Start here.

Getting Started

Install the app, configure your language, and add your first word.

Add vocabulary manually, with AI assistance, or by importing a file.

Review Sessions

Practice your vocabulary with spaced-repetition flashcard sessions.

Settings & Preferences

Configure your language, API keys, metadata fields, and more.

Tips for building an effective and sustainable vocabulary habit.

Core Features

Flashcard Types

Ten card types test recognition, production, listening, and context.

Generating Flashcards

Use AI to automatically create flashcards for any word.

Spaced Repetition

How Language Den schedules reviews to maximise long-term retention.

Track your streak, accuracy, and mastery over time.

Organise vocabulary by book, show, podcast, or any other source.

Quickly process imported words — keep, generate, or discard.

Filter and search your collection by status, flag, or keyword.

Capture words on the go with text or audio — add them properly later.

API Keys

Connect an OpenRouter key to enable AI word analysis and flashcard generation.

Connect an Unsplash key to attach images to noun flashcards automatically.

Import & Export

Import an Anki .apkg deck and map fields to Language Den.

Import a spreadsheet of words using accepted column names.

Reference

Supported Languages

All 59 target languages, script support, and right-to-left input.

What data is stored, what leaves your device, and how to delete everything.

Keep vocabulary and review history in sync across all your Apple devices.

Troubleshooting

Solutions to common issues with AI features, sync, import, and more.