Unfortunately, older devices with lower memory capacity are known to be at risk of having crashes. This is more noticeable in some of our newer games such as Coding Awbie, Coding Jam and Pizza Co. We are investigating ways to help reduce the likelihood of these issues occurring and hope to be able to make improvements in the near future.
In the meantime, we suggest closing all background apps on your device and restarting the device before you start playing. Doing this should help reduce the likelihood of the crashes happening. It is recommended to, at minimum, always play without other apps running in the background.
Note also that the minimum iOS version required to play the Osmo games is 8.0.