Does Setapp membership on the Mac enable Pro features in iOS and Android?

Setapp is a 3rd party service as you're aware, separate from the App Store. We recently announced that we will be distributing our Mac app through Setapp. This model works well for the Mac, as developers like ourselves can distribute our apps as part of a single subscription service, offering other amazing apps. However, since 2Do is sold separately on each platform (as in-app purchase on iOS and Android) and do not demand an ongoing subscription, getting 2Do on the Mac via Setapp will unfortunately not automatically result in a free upgrade on other platforms. 

Perhaps if Setapp was to one day be introduced as a service on iOS and Android, we would gladly look into partnering with them to allow our apps to be used cross-platform without any additional fee for existing Setapp users.