Luteal phase is the cycle window a user can select inside Unfair as the context label for logs that fall after ovulation and before the next menses, available as voluntary metadata for review and not as a clinical staging tool.
Tag, not assessment
The luteal label inside Unfair is something the user reports. The app does not measure progesterone or any other physiological signal to confirm the phase. Use of the label is optional. Other tags such as mood score and daily check-in capture the actual day-to-day data the review uses.
What this window often covers
Some users find that this window includes more variability in sleep continuity, appetite, fluid retention, or daily comfort. Reviewing a stack journal without a phase tag can lose that context. Tagging entries gives the review screen a way to group days that share a common background. Broader notes on common tracking pitfalls live in the stack mistakes guide.
How the tag interacts with the rest of Unfair
Tagging a day luteal does not change recommendations, alter reminder windows, or unlock any dose. The tag travels with the entry into review only. Users who want to test a personal hypothesis can compare luteal-tagged days to follicular-tagged days inside their own review. The output is observation for discussion, not a self-prescribed protocol.
Common review questions
A grouped review can answer simple questions such as whether self-reported sleep quality tends to change in the second half of the cycle or whether a side effect note clusters there. None of these answers stand alone as a clinical decision.
Limits of self-tagging
Self-reported phases can be wrong, especially when cycles are irregular or recent medication changes have occurred. Unfair does not flag a mismatch and does not try to back-derive ovulation. Users who need more reliable phase context should work with a clinician and bring those records back to their own review.
How this appears in Unfair
A luteal chip appears in the optional phase picker on a day log. The chip is voluntary and is one of several phase options. The chip changes how the user can group their own data, not what the app suggests.
Clinical safety note
Severe or new luteal-window symptoms such as persistent pain, mood changes that affect safety, or bleeding outside expected windows are a clinician consult conversation rather than a stack change.