Put Calclulo on your home screen.
Open every calculator in one tap, full screen, even without a connection. No app store, no download page, no account.
CalcluloOpen the menu
In Chrome, tap the three dots in the top-right corner of the screen.
Choose Install app
Tap Install app. If you only see it as Add to Home screen, choose that instead.
Confirm
Tap Install. Calclulo now sits with your other apps and opens full screen.
Samsung Internet: tap the menu, then Add page to, then Home screen. Firefox: open the menu and tap Install.
Open in Safari
On iPhone and iPad, installing works best from Safari. Open calclulo.com there.
Tap Share
Tap the Share button: the square with an arrow pointing up, at the bottom of the screen (top on iPad).
Add to Home Screen
Scroll the list and tap Add to Home Screen. If you cannot see it, tap View More first.
Tap Add
Check the name, then tap Add in the top-right corner. Calclulo appears on your home screen.
Look in the address bar
In Chrome or Edge, find the small install icon at the right-hand end of the address bar.
Click Install
Click the icon, then click Install. Calclulo opens in its own window.
Pin it
Pin the app to your taskbar or dock for one-click access.
Everything you love, one tap away
Opens instantly
Launch from your home screen, no browser, no typing the address.
Works offline
Pages you have used keep working on a plane or on a weak signal.
Full screen
No address bar or tabs. It feels like a native app.
Tiny and private
Uses little storage and your numbers never leave your device.
About the app
Yes. Calclulo is free to install and free to use. It installs straight from your browser, so there is no app store and no account needed.
Very little. The app caches the calculators you open, usually well under 5 MB in total.
Yes. Once installed, the pages you have visited open without a connection. Signing in and syncing favourites need a connection.
Remove it like any other app. Press and hold the icon on your home screen and choose Remove or Uninstall.
If the install option does not appear
Install options depend on the browser and the device. If you do not see an Install button or an icon in the address bar, make sure you are using a recent version of Chrome, Edge, Safari or Samsung Internet, and that you opened the site in the browser itself and not inside another app such as a social media or messaging browser. Opening the link in your main browser fixes most cases. On iPhone and iPad, only the Share menu can add a site to the home screen, so use Add to Home Screen from there. If you have already installed the app, the browser may hide the option, so look for Calclulo among your apps.
What works offline
Once the app has loaded, the calculators and the pages you have visited work without a connection, because the calculations run on your device. Things that need the internet, such as signing in, syncing saved items, loading a page for the first time and fetching the latest version, wait until you are back online. The app updates itself quietly when a new version is available, so you do not have to download anything by hand.
Storage, updates and removing the app
The installed app uses a small amount of storage for pages and images. If you need to free space, you can clear the site’s data in your browser settings. To remove the app, press and hold the icon on a phone and choose Remove, or open the app menu on a computer and choose Uninstall. Removing it does not delete anything from your account. If something looks out of date after an update, close the app fully and open it again, or reload the page once while online.