Runs in your browser
The browser must be Chromium compatible, e.g. Google Chrome, Microsoft Edge, Vivaldi, Brave, or Opera
Won't run on Mozilla Firefox.
Won't run on Apple devices
With compatible browser,
Will run on Windows, Linux, Chrome OS devices, and Android phones/tablets.
Will run in portrait or landscape mode.
Needs an Internet connection
Needs JavaScript to be enabled
If the app saves/retrieves state data between uses, you need to be logged into a Google account
Please review our User Agreement and our Privacy Policy.
Use is free. There are no ads.
Each web app has a home page with a 'Web app link" at top of page. Following this link will start the web app.
The web app's home page will have Supplemental Usage Notes if any startup permissions are needed.
There's typically a browser menu command called add new bookmark .With Chromium browser there's star icon in url box, or menu command.
The bookmark will use the app's icon and title. Your browser will let you organize your bookmarks.
With Android, the Chromium browser has an 'add to home screen' command. The icon is a colored chromium page icon, rather than the app's icon, but the bookmark has the title of the web app, i.e. 'RPN Crunch3'.
Once on home screen you can move the shortcut to where you want.
To know if a new version exists, periodically compare:
The version no. and date shown on Description | About section of each App's Help page, and
The version, and date shown the app's web home page. There's a link to the web app's home page in the Description | Upgrade section of the web app's Help page.
If a new version exists, click the new link on the web app's home page, and:
Remove the old bookmark, which will run the old link.
Bookmark the new link. By bookmarking the new link, you're running the new version.