Nice job. Price seems fair to me. You’ve found a problem and fixed it. This crowd always bemoans paid (and closed source) things so I’ve come to largely tune that out because it’s just a given.
This seems like a $5/year app—not a $20/year one. Or, make it a one-time $10 charge; if future MacOS versions require significant work to keep it up to date, charge an upgrade fee.
This seems like a $5 app full stop, not per-year. There's ~zero ongoing costs involved, and bugfixes that justify renewed purchases would be keeping up with any OS breakages which realistically should be exceptionally rare, but definitely aren't yearly regardless.
Annual macOS releases regularly make changes to the bluetooth stack and the sound stack.
Additionally, there are always new Mac products as well as new AirPods products being released, and getting them working on new hardware has costs (including but not limited to acquiring that hardware).
I find it extremely frustrating when apps stop getting updated and become abandonware because they relied on new customers to pay recurring bills (rent, groceries...) instead of relying on recurring payments from existing payments who derive value from their product.
Everyone wants the price to be lower, which is fine, but saying that you don't want to pay on an ongoing basis but still want to receive ongoing updates is not fair.
