About

About this site

App Museum is a collection of tools, games and experiences that run entirely in your browser. There is nothing to install and no account to create: open a page and use it.

We also publish guides that explain when an app is useful and how to solve the problems people commonly run into.

How the site is run

What you enter into an app is processed in your browser and is not sent to a server.
No sign-up is required.
Every app and guide is free to use.

How content is made and checked

Apps and guides are developed with the help of AI agents.

Every change is tracked in a Git repository and is published only after it passes formatting and static analysis, type checking, automated tests and build-time validation, and has been reviewed. The Japanese and English pages are kept aligned in content.

If you notice a bug or a mistake in the content, please let us know through the contact page.

Revenue

This site may display ads. For the cookies used by ads and the information sent to external services, see the Privacy Policy.

Operator

Operator name: App Museum
Contact: Use the form on the contact page.