Any time an app crashes, it's good practice to close all open apps before trying again:
iPads: Double tap the home button to view all open apps, then press and swipe up on each app window to close them. If your iPad doesn't have a home button, swipe up from the bottom of the screen to view all open apps.
Fire tablets: Tap the white square at the bottom of the screen to view all open apps, then press and swipe to either side on each app window to close them.
If that doesn't resolve the issue, please uninstall the app, restart your device, and then reinstall the app again. Additionally, we highly recommend updating your device to the most recent operating system version to ensure the Osmo apps are able to run at their best. Note that the minimum iOS version required to play the Osmo games is 11, and the minimum Fire OS version required is 7.0.
If you follow the steps listed above and the issue continues to occur, please contact us through this support form with your device model number and a few pictures or a video of the issue occurring so we can better assist you.
Here are instructions to find which model / device you have:
iPads: open Settings > General > About
Fire tablets: open Settings > Device Options