Streak is a Trello Power-Up that allows you to track habits straight on your Trello board.
You check off that you've completed your habit using ...
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I tried adding this power-up, but it does not show when I open a card.
Ah! There's probably some way I can make that experience better. You have to open the settings on the RHS of your card, and press save. That turns on the habit tracking for that card.
Now, I see it after clicking on the Streak Power up in the card. Thanks for the help.