Is Volum completely free?
At the moment, Volum is completely free for all supported Apple devices.
We are considering adding paid features in the future.
The current set of features will always stay free, we'll never remove current features and place them under a subscription.
If the app proves useful for enough people, the plan is to add one-time in-app purchases for new features that require a lot of effort and maintenance.
We don't like subscriptions either :)