Every card has its own statistics screen: the narrowest zoom level in the three-tier system described in How statistics work. This article covers what's on it, and the two things that only appear at this tier: lapses and the leech flag.
Note
Card statistics require flangu Pro.
Opening a card's statistics
From a card's detail screen, tap the 
Statistics button in the actions row.
Card identity
Near the top: the deck the card belongs to, when it was created, when it was last reviewed, and when it's next due.
Next review reflects this card's own schedule. If the card is overdue, the date shown is still in the past rather than "today," the same behavior as Deck statistics.
Maturity and interval
Maturity shows the card's current bucket: New, Learning, Young, or Mature. This is the same classification covered in Card states, with one simplification: Learning and Relearning are shown as a single "Learning" label here, since this screen only has room for one maturity word rather than a full breakdown.
Interval is the scheduled gap between this card's last review and its next one, shown in days.
Note
Interval is not the same number as Stability, shown further down in SRS Parameters. Interval is the calendar gap between your last review and the next one. Stability is FSRS's own estimate of how long your memory of this card lasts, which is what the schedule is based on. For a card that's just been reviewed, the two are close. They can still diverge, since Interval reads directly off the two review dates while Stability is the model's internal value.
Review quality
The Review Quality card is the same Again/Hard/Good/Easy donut and Standard/True retention toggle used at the global and deck tiers, scoped to just this card's own review history.
What Standard and True retention mean is covered in full in Retention explained. This screen doesn't redefine them, just narrows them to one card.
Lapses and the leech flag
A lapse is a review where you rated the card Again after at least one full day had passed since your last review of it. This is the same different-day filter used for true retention: a same-day repeat of a failed card doesn't count as a lapse, since you hadn't actually forgotten it across any real gap.
The Card Information card shows your running lapse count. Once a card reaches 8 lapses, it's flagged as a Leech, shown in red next to the count.
A leech is a signal, not an action. flangu doesn't suspend, bury, or change the scheduling of a leeched card automatically. It keeps reviewing normally. The flag exists so you can notice a card that keeps slipping and decide for yourself whether to rewrite it, split it into a simpler card, or leave it as is.
SRS parameters
Stability and Difficulty are FSRS's own values for this specific card. What they mean and how ratings change them is explained in Learning methodology; this screen is where you can actually see the numbers behind your own card.
Difficulty also appears in At a Glance, rounded to one decimal place there and two here. Both numbers are the same value, just displayed at different precision.
Study time
Study Time shows two numbers: total time spent reviewing this card, and your average time per review of it. Like Deck statistics, there's no 7-day bar chart at the card level. That breakdown only appears globally.
What's not here
Card statistics don't include a due forecast or a growth chart. Both describe a collection of cards over time, and a single card doesn't have a forecast or a size to grow.
Deleting the card doesn't erase the review history counted here; see Deleting a flashcard for what deletion does and doesn't affect.