Last Updated: March 2026
A voluntary project — free for everyone, always.
Casual Character Chat is a passion project created to give everyone access to a private, uncensored, and independent AI companion experience. It costs nothing and is offered freely. No company, no subscription, no data harvesting — just a tool that belongs to you.
This application was built from the ground up with a privacy-first principle. Your creations, characters, and conversations belong exclusively to you — and only you.
This app runs entirely in your browser. There is no backend server, no cloud storage, and no account system. All data you generate — including characters, chat histories, personas, images, and settings — is stored exclusively on your own device within your browser's local storage (IndexedDB).
The developer has no access to your data and never will. Nothing leaves your device unless you explicitly export it yourself.
When you send a message, your browser connects directly to your chosen AI provider (e.g., OpenRouter) using the API key you provide. Your key and chat content are sent directly to that third-party service — they never pass through any server operated by this project. Please review the privacy policy of your chosen AI provider for details on how they handle your data.
Because all content stays local and no central infrastructure is involved, there is no censorship or content filtering applied by this application. You have complete freedom to create the characters and stories you want. What happens in your browser, stays in your browser.
Because your data exists only on your device, you are solely responsible for keeping it safe. Please use the "Export Data" feature regularly to create backups. Clearing your browser data will erase everything.
By using the "Casual Character Chat" application (the "App"), you agree to these Terms of Use.
The App is provided "as is" and "as available" without warranties of any kind. The developer reserves the right to update or discontinue the App at any time without notice. No uptime or availability is guaranteed.
You are solely responsible for:
The developer provides the App without any warranties of performance, reliability, or fitness for a particular purpose. The developer is not liable for any damages, including but not limited to data loss, financial loss from API usage, or service interruptions. You use the App at your own risk. The developer is not responsible for the availability or conduct of any third-party services such as OpenRouter.
These terms shall be governed by the laws of Austria.
Casual Character Chat is a voluntary, non-commercial project. It is and will always be free for anyone to use. To protect that spirit, the following license applies:
The intent is simple: this project was made freely available so that everyone can benefit from it equally. It must remain that way. If you build something great with it for yourself — enjoy it. But please don't take something offered for free and make it unavailable or costly for others.
The Starter Character Pack included with this app may contain characters inspired by or based on existing anime, video game, or other fictional universes. All intellectual property rights to these characters remain solely with their respective original creators and rights holders. No ownership, affiliation, or endorsement is claimed by this project.
The character entries in the Starter Pack are provided exclusively as demonstration examples — to give users a concrete sense of what kinds of characters can be created and to serve as an accessible sandbox to explore and experiment with the app's features. They are not intended as reproductions or commercial use of the source material.
Any avatar and background images included in the Starter Pack likewise remain the property of their respective original creators and rights holders. They are used solely to demonstrate the app's image feature and to show how a fully configured character creation looks within the app. No ownership or rights over these images are claimed by this project.