For Iphone:
Open Settings
Search for or find App Store in Settings
Tick App updates under Automatic downloads
Please note that with these settings, the app will only be updated if your device is connected to Wi-FI. In order for the Cosafe app to update automatically on mobile data, you will also need to set the following settings:
Tick Automatic downloads under Mobile data
For Android:
Open Google Play
Click on your profile in the top right corner
Click on Settings
Select Network settings
Click Automatically update apps
Tick wifi only or all networks
To make sure you always have the latest version of Cosafe, you can easily check it in the app under My Profile.