Dork Heresy is a free, non-commercial hobby project. I collect only what the features need to work, and nothing is sold, shared or used for advertising. To the extent that I can choose, the data is kept in the EU.
The things you create in the app, each tied to your user identifier: your character sheets, any campaigns you run as a Game Master along with their invite codes, the NPCs and encounters in them, and a log of events in those campaigns — sheet changes and, in time, dice rolls — so a group can review what happened last session.
If you upload a portrait for an acolyte or an NPC, the image file is stored too. If you enable the Discord integration, the webhook URL you paste is stored with the sheet or campaign it belongs to, and roll results are sent to that Discord channel when you choose to share them.
A Game Master can see the character sheets that players have linked to their campaign, and players can see limited information about the rest of the party. That sharing follows from joining a campaign, and ends when a character leaves it.
Deleting a character or a campaign in the app removes it, along with any portrait uploaded for it. If you want your account and everything attached to it removed entirely, get in touch and I will do it.
I use third-party cloud services to keep a hobby project maintainable by one person. These are all well-known companies in the industry, and each has its own privacy policy.
Questions, corrections, or a deletion request — please get in touch. Happily. :)