# Litepaper

## Litepaper

- [Practice, Learn, Succeed!](https://docs.langx.io/docs/welcome/readme.md): An overview of LangX, a free-to-use, open-source language exchange app designed to connect language learners with native speakers. This document covers the app's features, how it works, how to contrib
- [LangX Token](https://docs.langx.io/docs/token/token.md): What the LangX Token is, how you earn it, what you can spend it on, and what it deliberately is not.
- [How Tokens Are Earned](https://docs.langx.io/docs/token/distibution.md): How LangX Tokens are earned — the direct awards, the daily caps that keep them honest, and the shared daily pool.
- [Spending Tokens](https://docs.langx.io/docs/token/utility.md): The complete list of what LangX Tokens can be spent on — a streak freeze, filling in a missed day, cosmetic frames and titles, and sticker packs.
- [Daily Tokens](https://docs.langx.io/docs/learn-2-earn/daily-tokens.md): When the daily pool is worked out, how it reaches your balance, and where to see it.
- [Badges](https://docs.langx.io/docs/library/badges.md): The badges LangX gives for what you have done — streaks, corrections, messages, tokens earned and time as a member — and what they do and do not change.
- [Notifications](https://docs.langx.io/docs/library/notifications.md): What LangX sends you, when it sends it, and how to turn any of it off — per kind and per channel.
- [Calls](https://docs.langx.io/docs/library/calls.md): Voice and video calls with the people you chat with: how to call, who can call you, how to turn calls off, and what keeps them private. On the web now, coming to the iPhone and Android apps.
- [Day Streaks](https://docs.langx.io/docs/library/day-streaks.md): How day streaks work, what keeps one alive, and how to rescue a day you missed.
- [LangX Copilot](https://docs.langx.io/docs/library/language-copilot.md): An introduction to LangX Copilot, an AI-powered tool designed to enhance your language learning experience with personalized feedback and privacy-focused features.
- [Getting Pro Free](https://docs.langx.io/docs/library/free-pro.md): Three ways to get Pro without paying — invite friends, keep a streak, or use a gift code — and what happens when free Pro ends.
- [Coming Back From the Old App](https://docs.langx.io/docs/library/coming-back.md): Had a LangX account before the new app? Your profile, username, streak and tokens are waiting — here is how to get back in.