We have received multiple requests to re-consider adding ads to our applications. We do agree that some ads are annoying and keep popping up from nowhere, but we had limited it to the minimum as much as we can. Moreover, we considered releasing a paid version with no ads at all. Here is the link for downloading it. The new MAC Vendors Pro shares the same features of MAC Vendors including the new save functionality for both WiFi Scans and MAC Addresses scans.
Please keep in mind that if you are using iOS 11 or later, you will no longer see the MAC Address of connected devices when you are scanning the connected WiFi network.