The Mavis Camera "Buy us a coffee" In App Purchase (IAP) is a one-off Non-Consumable purchase that allows you to reward the Mavis team for using the app's free features.
It is currently priced at USD $4.99 (local currency conversations apply).
The "Buy us a coffee" IAP does not unlock any features within Mavis Camera as it is purely a reward / gift mechanism.
Mavis Camera is available on iPhone and iPad. Terms and Conditions apply. See mavis.cloud/terms-and-conditions for full details.