Yes, but you will need to purchase the add-ons from the Online TMM Store.

Note: Purchases made from the Amazon App Store or Google Play or the Apple App Store or the Mac App Store cannot be shared with a device signed into a different store account on the same platform.

Example:
You and your wife have separate Apple App Store accounts but you want to share purchases using the free version of the app on iPhone or iPad. Well, if you or your wife purchase add-ons in the iPhone/iPad app then the other persons iPhone/iPad will not have access to those purchases. The only way to be able to share purchases in this scenario is to purchase the add-ons from the Online TMM Store then sign into the account made the purchases on your devices.