SoundGym is a very similar platform to ToneGym, focused on music production and audio engineering.
Both platforms are provided by the same parent company called SoundGym Inc. Therefore, if you get billed by SoundGym this could be for either a ToneGym or SoundGym subscription.
To determine for which of the platform's subscriptions a certain payment is, please look into the details provided in the receipt you were provided with, or contact our support team.