Every icon, and the rule behind it
Each day on the calendar is split along its diagonal into its two onos — the night on one side, the day on the other. Everything the calendar draws sits on one of those onos, and everything follows from what is recorded: expectations are drawn with a line beneath them, and they give way the moment the thing itself is recorded.
The count, from flow to tevilah
A flow that follows a tevilah carries the minimum days before a hefsek (five by the Ashkenazi shitah, four by the Sefardi), counted with the day of the onset as day one; nights of separation kept immediately before it can shorten it. While a count is already open — no tevilah since the last tumah — a new stain, bedikah or flow does not bring the minimum back: it restarts the seven, and the hefsek may be made that same day. Only a recorded tevilah closes a run and restores the full minimum to what follows.
The hefsek taharah is made before sunset; the seven clean days run from the day after it. A finding that prohibits during the seven starts them again, and the seven then count only from a hefsek made after the last such finding. The first hefsek governs a count — a second one moves nothing unless the count was restarted.
The tevilah belongs to the night after the seventh clean day, and the app refuses one earlier. Recording it matters beyond the night itself: after it, a stain opens a fresh count with its full days — before it, a stain costs one day. Where a new tumah is entered and the past count's mikvah night went by with no tevilah on record, the app asks whether one took place.
What you recorded
- Onset (ra'iyah)
- A flow. After a tevilah it opens a count carrying the full minimum days; inside an open count it restarts the seven with no new minimum.
- Stain (kesem)
- A stain (kesem). After a tevilah it opens a count of its own; inside an open count it costs one day and the hefsek may be made the same day.
- Hefsek taharah
- The hefsek taharah, made before sunset. The seven clean days count from the day after it; the first one made governs the count.
- No hefsek — not attempted
- A day that could have held a hefsek and closed without an attempt. Recorded by hand, or written in automatically once the day has passed; each one moves the earliest hefsek a day on. Days before the minimum ended never get one, and neither does any day from the hefsek actually made onwards.
- Bedikah that prohibits
- A bedikah that was not clean. During the seven it starts them again; a new hefsek may be made the same day.
- Bedikah — clean (not a hefsek)
- A clean bedikah that is not a hefsek. Recorded for the completeness of the record; it counts nothing on its own.
- Medical examination that prohibits
- A medical examination that prohibits. It restarts the count: the seven run only from a hefsek made after it.
- Mikvah
- The tevilah. It closes the run — and it is what gives the next flow its full minimum, so it should always be recorded.
- Gave birth
- A birth, one glyph per baby in its colour. The yoledes minimum applies — seven days for a boy, fourteen for a girl — and you answer in how many weeks to expect the hefsek; the daily question waits for that day.
- Pregnancy loss
- A pregnancy loss. It carries the yoledes minimum like a birth, by the sex where it is known.
Onos to observe
Days the next flow is anticipated, projected from the record: the same day of the Hebrew month, the same interval, the thirtieth day, and the thirty-first of the Chavas Daas. Or Zarua guards the onah before a veses. On each of these onos separation is kept and the bedikos are made; three repetitions establish a veses kavua, which keeps projecting until it is uprooted. An onset that lands beside an anticipated onah leaves it in place — both are drawn.
- Estimated ovulation
- An estimate only: about fourteen days before the next expected onset, reckoned from the last onset and its own interval (thirty days where none is known yet). A family-planning aid, not a halachic day — nothing is counted from it — and it is not drawn while a pregnancy stands or the pill runs. It can be turned off in Settings.
The count
- Days before hefsek
- The days before a hefsek is possible, boxed from the onset with its day as day one. Only a count that follows a tevilah carries the full minimum.
- Earliest hefsek
- The first day a hefsek can be made — an expectation, drawn with the line beneath it, and gone the moment a hefsek is recorded.
- Seven clean days
- The seven clean days, boxed from the day after the hefsek to the seventh.
- Expected bedikah
- The bedikah a day of the seven expects — lechatchilah twice, morning and before sunset. Day one and day seven are the bare minimum, without which the tevilah cannot be made; how much of the rest to be shown and reminded of is set under Settings → Halacha. It yields to the record: a day whose bedikah is written down shows the bedikah itself.
- Mikvah night
- The expected mikvah night, the evening after the seventh clean day — an expectation like the others, gone once the tevilah is recorded.
Expecting and nursing
Expecting and nursing are seasons rather than events, drawn as a line through their months. While they stand no veses is established and the beinonis is not asked; through a pregnancy the line beats from hakaras ha'ubar for forty-two weeks.
On the grid
Nights of separation are ruled along the edge of the onah they belong to. The diagonal splits every day into its two onos — the night that begins it and the day that follows.
The pill
Recorded beside expecting and nursing, and a season like them: it opens with a pill-begins entry and closes with a pill-ends one. The app then carries the pack's rhythm — a heads-up on the last active day and on the day a new pack begins, and, where asked for, a reminder each night. The kinds differ by regimen:
Combined pill. Estrogen and progestin together: 21 active days, then a 7-day pause with a withdrawal bleed (24+4 variants exist). On a doctor's say-so the packs can be run straight into each other, skipping the pause and the bleed.
Mini-pill (progestin only). Progestin only, taken every day with no pause — the usual choice while breastfeeding. Spotting along the way is common on it.
Continuous / extended. Active pills taken continuously across packs so the monthly bleed is skipped; a pause comes only every few months, as prescribed.
Vaginal ring. A soft ring worn inside for 3 weeks, then left out for 1 week, in which a withdrawal bleed comes. The same hormones as the combined pill, with nothing to take daily.
Hormonal IUD. A small device a clinician places in the uterus, releasing progestin locally for 3 to 8 years. Bleeding usually lightens and often stops altogether; spotting in the first months is common. Nothing to take and no pack rhythm - so no cycle reminders.
Copper IUD. A copper device a clinician places in the uterus - no hormones at all, lasting 10 years and more. The cycle keeps its own rhythm (periods can run heavier at first); ask your rav how vestos are treated while it is in.
The brand names differ by country; the kind on the leaflet is what matters, and your pharmacist can say which one yours is.
United States: Sprintec, Estarylla, Junel, Loestrin (combined) - Errin, Camila (mini-pill)
Europe / UK: Microgynon, Rigevidon, Yasmin (combined) - Cerazette, Cerelle (mini-pill)
France: Leeloo, Optilova, Minidril (combined) - Cerazette, Optimizette (mini-pill)
Germany / Austria: Maxim, Evaluna, Levomin (combined) - Desirett, Jubrele (mini-pill)
Australia: Levlen ED, Microgynon 30, Yasmin (combined) - Noriday, Microlut (mini-pill)
Israel: Feminet, Yasmin, Harmonet (combined) - Cerazette, Femulen (mini-pill)
The ring: NuvaRing, EluRyng, Circlet - worn 3 weeks, out 1 week
IUD: Mirena, Kyleena, Liletta (hormonal) - Paragard, NovaT, Copper T (copper)
While the pill runs, the bleeding follows the pill: every onset is recorded and counted as always, but no veses kavua is established from it.
Spotting while nursing is common, all the more so on the mini-pill. Halachically it is judged by the kesem rules exactly as always — when in doubt, ask your rav.
This app is an aid only and is not a substitute for a rav. Vestos kavuos, questionable stains, bein hashmashos onsets and all real-life shailos must be brought to a rav.