Thank you for sharing this great suggestion and the context here.
While these specific features are not currently available as one standalone app - I can definitely see how it would be useful as many sellers use various aspects of each app.
Most of these functions can be accessed through our Dashboard which serves as a centralized hub where you can manage subscriptions, track loyalty status and redemptions, etc. - but an app would be super helpful.
While we don't have immediate plans for a dedicated app, I'll be sure to let you know here if there are any updates!