We are planning to monetize our app. Users should have the option to subscribe to a premium plan. Currently, our app is a companion app, meaning it is an extension of a physical product.
With the new update, the app can also be used without the physical product. This functionality will be governed by the subscription. Specifically, users will be able to record a cycling tour using only the app.
We also sell a bicycle light (a physical product). Can we state that users who own the bicycle light and pair it with the app can use the app for free, i.e. without a subscription, and still access the premium feature for recording an activity?
We are unsure how Apple Guideline 3.1.4 applies in this case.