If you'd like to gain early access to updates and test new features, then we'd love to have you as a Microsoft To Do Insider on our Windows 10, Android, and iOS beta apps.
To download our Windows beta app, you'll need to become a Windows Insider.
For Android, you can get our beta app by joining our public Android Insiders group.
For iOS, you'll first need to install TestFlight on your iOS device. You can find it here or in the App Store. Once TestFlight is installed, you can join from your device. You'll then be able to download and install our beta app via TestFlight.