Will the Mobile App for Inventory Management plugin deactivation affect my existing subscription?

Will the Mobile App for Inventory Management plugin deactivation affect my existing subscription?

Yes, deactivating the Mobile App for Inventory Management plugin will reduce your subscription amount for your next billing cycle. The reduction in amount will depend upon your choice of edition, number of plugin licences, and the billing cycle that you have opted for. The Cart Details on the Purchase Subscription screen clearly indicates the subscription amount from the next billing cycle. 
There will be no change in your subscription amount in the current billing cycle if you are only deactivating the Mobile App for Inventory Management Plugin AND not updating your store / POS count.
The Tagrain Handheld mobile application is available on both - Android and iOS and can be downloaded from the respective App stores.