Have relationship apps helped rebuild connection in a struggling relationship?

[EagerGreenShaker]

Has anyone any experience of relationship apps that are supposed to help build the connection between you again and bring life back to a troubled relationship?

Did you find that it helped or was it total waste of time?

I didn't know they existed but saw no replies so wanted to ask but why need an app ? That isn't a dig but a curiosity. What are the troubles ?