# Akin > Akin is a free, mobile-first streak tracker that turns daily goals into a playful routine with coins, friends, and a customizable capybara companion. Akin can be tried without an account. Guest streaks stay in the browser; GitHub sign-in adds cross-device data, a profile, rewards, pet customization, and social features. ## Product guide - [Akin overview](https://akin.4oli.com/index.md): Concise, LLM-friendly product facts, guest and account behavior, features, and suitable use cases. - [Akin](https://akin.4oli.com/): Product page and entry point to the streak tracker. - [Interactive demo](https://akin.4oli.com/demo): Account-free demo with example streaks and app features. ## Technical references - [Project README](https://raw.githubusercontent.com/martinezharo/akin/main/README.md): Current feature set, data model, routes, development, and deployment. - [Source code](https://github.com/martinezharo/akin): Canonical source repository. - [Sitemap](https://akin.4oli.com/sitemap.xml): Public, indexable product and demo pages. ## Optional - [License](https://raw.githubusercontent.com/martinezharo/akin/main/LICENSE): GNU General Public License v3.0 terms for the source code.