You can add a card that is not listed in Stocard by adding it as "Other Card".
We will automatically generate a default logo for all your custom cards in Stocard. However, you can change this default icon by opening the particular card and choosing to "Edit". Now, you have the option to "Add Card Icon" (Android) or "Change Image" (iOS). We would suggest using the card provider's logo so that your custom cards look similar to the cards you added via our database. A front and back picture of your actual card can then be stored in the "Notes" section instead.