Honest notes on cycles, periods, and your body.
Plain-language, evidence-based guides. Educational, never diagnostic.
How late can a period be? What's normal, what's irregular
A few days late is usually nothing. But how late is too late? What counts as an irregular cycle, what's behind the delay, and when to see a doctor, in plain language.
Irregular periods after stopping birth control: what's normal?
Stopped the pill and your cycle is all over the place? Here's how long irregular periods typically last after birth control, why it happens, and when to check in with a doctor.
PCOS cycle length: what's "normal" when you have PCOS?
With PCOS, cycles of 35, 60, even 90+ days are common. What PCOS cycle lengths actually look like, why they vary so much, and how to track a cycle that won't follow rules.
Can you predict your period with PCOS? An honest answer
Most period apps fail at PCOS prediction: here's why, what's honestly predictable with irregular cycles, and how ranges and confidence levels beat fake-precise dates.
PCOS tracking: what to log before your doctor's appointment
The exact cycle data, symptoms, and history a gynecologist actually uses for PCOS: what to track, for how long, and how to bring it so your 15-minute appointment counts.
Which period trackers keep your data on your phone?
Where your cycle data actually goes, which period trackers store it only on your device, and the five questions to ask any app before you log a single period.
Deleting a period tracker doesn't delete your data. Here's what does
Uninstalling a period app usually leaves your cycle history on the company's servers. What actually gets deleted, how to request real deletion, and how to switch apps safely.
Best period tracker for irregular cycles: an honest 2026 guide
Most period trackers quietly assume a regular cycle. An honest comparison (written by a tracker developer, biases disclosed) of which apps genuinely handle irregular and PCOS cycles.
Why does my period app keep getting predictions wrong?
If your period app's predictions keep missing, it's not your body. It's the app's math. Why averaging fails irregular cycles, and what honest prediction looks like.
The 28-day cycle is a myth
The 28-day 'average cycle' shapes apps, expectations, and worry, but real-world data from 600,000+ cycles shows it's the exception. What cycles actually look like.