Google Play - Family Library support

Learned about this app yesterday and am really excited to get my mom on it too since she uses Google Chromecast TV devices, but it's my understanding that the only way to pay for the app right now is via an in-app purchase.

However, Family library allows sharing of only purchased apps, not in-app purchases.

It would be great if the app could be made compatible with Family library by releasing a version with the Pro features on its own listing on the Google Play store for the same price as the in-app upgrade.