Yes for sure. Because it is a couples app & meant to work for couples, Both of you should signup on the app. And you should use the app as your daily communication tool with each other. Because that is how the A.I of the app will learn about your relationship and then serve you useful suggestions.
Though its not absolutely important for you to use the chat function of the app but you will see better results if you use this app as your main communication tool for each other. The A.I will have more markers to learn about your relationship and then will server you useful suggestions. That’s the only reason we built the chat function in the app.