In a nutshell
We have access to some personal data through Trello which is necessary for the Power-Up to work, but we do not collect and store any data about you in any form. We plan to keep it that way in the future, too.
In order to able to use Text to Cards you need to authorize the Power-Up on Trello, therefore Text to Cards may access some public user information from Trello, including but not limited to your name and username, your boards and teams.
We only use this information to the extent it is absolutely necessary to perform actions on your behalf in the Power-Up. We never collect or store and never disclose any personal information about you.
We do not track users and do not collect usage data in any form.