Discreet for every guest. Simple for everyone else.
Guests book in thirty seconds with a first name and a mobile number, and nothing they ever see says "mikvah". The balanit gets tonight's list on their phone, the hours follow nightfall on their own, and the director stops taking calls at ten at night. Nobody has to learn anything.
A phone that rings at ten. A Venmo request nobody wants to send. A list on the fridge.
Three problems every mikvah director has lived through — and what we built so they stop happening.
The phone list stores names. 613OS runs the evening.
A phone list, a Venmo handle and a WhatsApp group record what happened and wait for a person. 613OS takes the booking, assigns the room, sends the reminder, texts the balanit and closes the calendar before Shabbos — every night, whether or not anyone remembered.
What you have now
What 613OS does for you
The phone list records who called. 613OS books, pays, reminds and clears — so the director's evening gets quieter every month, not louder.
Discreet for every guest, simple for everyone.
Everything a mikvah needs, set up once with you and then left alone. Every mikvah-specific setting lives on one page, so the director changes a price or a door code without calling anyone.
| Time | Room | Appointment | Status |
|---|---|---|---|
| 7:00 PM | Bath 1 | Appointment · R. | Paid · reminded |
| 7:00 PM | Shower 2 | Appointment · M. | Paid · here |
| 7:45 PM | Bath 3 | Appointment · D. | Paid · reminded |
| 8:15 PM | Kallah suite | Kallah · S. | Paid · teacher confirmed |
| 9:30 PM | Bath 2 | Appointment · L. | Last bath · reminded |
Easy for the director, the balanit and the rav.
The mikvah-specific tools that ship with 613OS for mikvahs. Items marked "set up with you" are configured once, during onboarding with your director and supervising rav, and then run without attention.
What it doesn't do. 613OS does not keep anyone's visit history beyond the window you choose, does not put mikvah contacts into shul campaigns unless the guest opts in, and does not replace the rav: the hours rule and every message's wording are his to approve before anything goes live. Keep your own card processor and the booking software is still free; you lose only the door hardware and the shul-ledger rollup.
Nothing in the system tells anyone they were there.
Visit dates are private, for women and men alike. Families share phones and bank statements. So the system stores as little as possible, says as little as possible, and shows each person only what their role needs.
Sunset to closing, without anyone remembering.
Eight things that happened tonight at a mikvah on 613OS — and nobody had to start any of them.
Same mikvah. Same balaniyos. Same rav. The difference is what happens when nobody's on the phone.
A device at the door instead of a cash box.
Men's mikvahs run on cash boxes, honor systems and prepaid tags; keilim mikvahs on a pushka. 613OS puts a tap-to-pay device at the door: tap, go in, done. It posts to the same ledger as everything else, locks on a zmanim schedule, and never needs an attendant.
Everyone gets their own reason to say yes.
A mikvah decision runs through the director, the rav and the shul. Here's what 613OS means for each of them.
Evenings back, with nothing to run.
Guests book by text or online and pay before they come. Tonight's list is on the balanit's phone. Cancellations, reminders and no-shows handle themselves, and the director changes a price or a door code from one settings page.
His rule, exactly, and his wording.
Hours follow his opinion for nightfall. Friday night is prepaid with a cutoff before candle lighting. No messages go out on Shabbos or Yom Tov and devices lock on the same schedule. He approves every word before it goes live.
One text, one list, nothing to learn.
A text at opening time with tonight's list and a link that opens on their phone. Guests who text the mikvah line reach the balanit directly. Ten minutes of training, and the rotation changes without anyone touching a setting.
Totals in the books, no names in the office.
No monthly bill, no staff time on the phone, and the mikvah's income on the shul's own ledger as totals only. The office never sees who came or when.
Live in a week, not a season.
Zero tech-savviness required — we do the setup for you, start to finish, from the way your mikvah runs today. Phone lists, Mikvah RSVP or MikvahCloud exports come to us by secure upload, never by email.
Included with every setup: Migration from phone lists, Mikvah RSVP or MikvahCloud · A hosted mikvah page on the shul's domain · Balanit training · The rav's sign-off meeting · No tech skills needed.
What you have now, side by side.
Competitor figures are from their published pricing as of November 2026. Where another platform is stronger, we'll say so on the demo.
| Phone & Venmo | Mikvah RSVP | MikvahCloud | 613OS | |
|---|---|---|---|---|
| Monthly fee | Staff time | $40–$830 | $0 | $0 |
| Setup and add-ons | — | $250–$5,000 | — | $0 |
| Per booking | — | — | $2, kept on cancellation | $2, not charged on cancellation before the cutoff |
| Stores the guest's identity | Their number in someone's phone | Account by phone number and text code | Name and phone | First name or initials only; history cleared on a timer |
| Hours from zmanim | Retyped by hand | Yes | Partial | Yes, by the rav's rule, weekly from Hebcal |
| Lobby tablet | — | About $5,000 | — | Optional hardware, sold or leased |
| Men's and keilim payment device | Cash box | — | — | Yes |
| Shares a ledger with the shul | — | — | — | Yes |
| Migration and balanit training | — | Paid add-on | — | Included |
The software is free. The guest pays $2 when booking.
No monthly fee, no setup fee, no add-on invoices. The $2 booking fee is the only charge, it is shown on the booking page before payment, and the mikvah can absorb it instead. Keep your own card processor and the booking software is still free.
- Online & text booking with rooms and kallah
- Hours from Hebcal by the rav's rule · Friday & Yom Tov prepay
- Neutral reminders · Shabbos quiet window · retention timer
- Balanit line, tonight view and nightly list
- Memberships, sponsorships, donations with gift acknowledgments
- Hosted mikvah page · director dashboard
- Shown on the booking page before payment
- The mikvah may pay it instead, at the same $2
- Visit fees, memberships and donations on 613OS Payments under the shul's name
- Walk-ins and cash at the door still work; the booking reserves the room
- Men's mikvah tap-to-pay device, memberships on autopay
- Keilim tap-to-donate plate or QR stand
- Lobby tablet for check-in and walk-in pay
- Every device locked on a zmanim schedule
- Shul bundle: the mikvah inside the shul's 613OS account, one ledger, totals only
The $2 booking fee is disclosed on the booking page before payment and is not charged on cancellations before the mikvah's cutoff. Mikvahs that keep their own processor still receive the booking software free. WhatsApp and the AI assistant are optional add-ons; SMS usage is billed pay-as-you-go.
Questions mikvahs ask
What does 613OS cost for a mikvah?
Our guests won't put "mikvah" on a credit card.
Our balaniyos are volunteers. Will they manage it?
What about guests who don't book online?
How are the hours set?
What happens on Shabbos and Yom Tov?
What happens to the data?
We already use Mikvah RSVP or MikvahCloud. How hard is the switch?
See how little there is to learn.
Fifteen minutes on a phone: book a slot with a first name and a mobile number, see what the balanit sees, and read every message a guest would receive. 613OS is a Merch FinTech company — payments infrastructure, with offices in Florida and New York. Built for women's, men's and keilim mikvahs, and the shuls, Chabad houses and mikvah societies that run them.