This is great! I've been needing a solution to this problem. However... I would pay $20 one time for it. But a subscription is a deal breaker. My guess is you'll make a lot more revenue by doing one time fees tied to a specific AirPod version. So each time I upgrade my AirPods, I pay a new one time fee instead of the subscription.
Thanks! Much appreciated. Unfortunately I don't see how 20$ one time fee will works for such a niche app. After commissions and taxes $20 becomes $10. Anywhere in the developed world the money required only to survive is at least 2000$, which means I will need to be selling 200 copies every month as long as the app exist only to get basic level of income and accumulating customers that I will have to support the year…
First of all, it's probably an unrealistic expectation that a small utility like this should be able to provide you with a basic level of income.
Second, in terms of pricing, you seem to be trying to make moral arguments about greed and scams here. But you should simply be realistic about the demand curve, and try to maximize your profit. If there are a lot more people who would buy this as a one-time purchase than as a subscription, you'll be losing money going the subscription route.