MiniCycle Blog

Period calendar guides grounded in practical cycle science.

Notes on cycle prediction, ovulation estimates, privacy, widgets, and the product decisions behind MiniCycle.

34 guides in English and Korean

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Predictions

Why MiniCycle's predicted period date keeps changing

MiniCycle recalculates predictions from saved period starts, the cycle-length setting, and the current date. Learn which changes move the next expected period and what remains uncertain.

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Cycle basics

How long should a period last? What's a normal length

Several medical sources describe a typical period as lasting about 2 to 7 days. Learn about individual variation and bleeding changes that deserve medical advice.

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Trying to conceive

Using MiniCycle's fertile window when trying to conceive

MiniCycle highlights seven dates from five days before estimated ovulation through the following day. Learn what that range means and why it cannot confirm fertility or ovulation.

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Cycle health

Period blood color: what brown, dark, and bright red mean

Period blood can appear bright red, dark red, or brown as flow and oxidation change. Learn why amount, duration, timing, and accompanying symptoms matter more than color alone.

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Logging

How to log a period start and end date in MiniCycle

Tap a date, pick period start, and MiniCycle fills the end with your period length. How logging start and end works, the seven-day replace rule, and the 14-day cap.

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Getting started

How to start tracking your period: a beginner's guide

New to tracking? What to write down from day one, how a cycle is counted, why your first months of predictions stay rough, and the few changes worth a doctor's note.

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Settings

Auto vs manual cycle and period length in MiniCycle

MiniCycle can estimate your cycle and period length, or let you set them by hand (21–42 and 1–10 days). When auto fits, when manual fits, and why the estimate uses a median.

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Cycle basics

What is a normal menstrual cycle length? It's a range

A 28-day cycle is a reference point, not a rule. Learn how major health sources describe typical ranges, variation, and changes worth discussing with a clinician.

Minimal calendar and pencil for editing a period record

Recording

How to edit or fix a wrong period date in MiniCycle

Logged a period on the wrong day? Learn how to edit period dates in MiniCycle: move a start, adjust an end, delete a record, and what happens to predictions.

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Reminders

How to set up period, fertile-window, and ovulation reminders

Set local reminders for the expected period, fertile-window start and end, and estimated ovulation day. Most support 0–3 days of lead time; fertile-window end currently arrives on the estimated end date.

Minimal calendar and range cards representing cycle variation

Cycle health

Why is my period late? What to check first

A late period can be related to pregnancy, stress, weight or exercise changes, illness, medication, or a health condition. Learn what to check and when to seek care.