Comparison

Mikvah Calendar vs Perach

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mikvah Calendar

This app provides accurate, rabbinically approved calculations for mikvah dates and reminders. It supports various Jewish traditions and offers personalized tools for tracking and preparation, ensuring privacy and halachic adherence.

Highlights
  • Automatic mikvah date calculations
  • Supports diverse Jewish traditions (minhagim)
  • Smart reminders and halachic alerts
  • Personalized tracking and kavuah system
  • Secure communication with religious leaders
  • Global support and multilingual access
Features
Read full description

Mikvah Calendar – The Original, Rabbinically Approved Mikvah Calculator MikvahCalendar.com is the most advanced and accurate Mikvah Calendar app, trusted by over a hundred thousand couples worldwide. Designed with full rabbinic approval, this powerful mikvah tracker calculates all your important mikvah dates and reminders based on your personal minhag and halachic custom. Whether you're Ashkenazic, Sephardic, Chabad, Satmar, Skver, Belz, Ger, Bucharian, or follow another tradition, Mikvah Calendar supports your home and lifestyle with precision, ease, and privacy. The Most Complete Mikvah Tracker Available: - Automatic Mikvah Date Calculations Calculates mikvah nights, Hefsek Taharah, Onot Perishah, ovulation estimates, and more. Supports all major minhagim: Ashkenaz, Chabad, Sephardic, Satmar, Belz, Skver, Ger, and Bucharian. Adjusts for leap years, daylight saving time, zmanim, Yom Kippur, and Tisha B’Av. Location-based zmanim for accurate mikvah times. - Smart Reminders & Halachic Alerts Discreet SMS, email, WhatsApp* (where available), or phone call reminders. Optional Mehadrin mode for homes without internet. Alerts for mikvah nights, ovulation, and halachic considerations. Health and fertility awareness reminders included. - Personalized Mikvah Tools Track flows, establish kavuah patterns, and view mikvah history. Use the most advanced kavuah system — the most accurate in the world. Mikvah preparation checklist. Add private notes and monitor trends. - Communication & Support for Your Home Securely email your Rabbi, Kallah teacher, or Rebbetzin with your mikvah calendar and history. “Ask the Rabbi” feature for halachic guidance tailored to your situation. Easily print summaries of mikvah dates and history for personal or rabbinic reference. Designed to support the halachic needs of your home with sensitivity and care. - Global Support & Multilingual Access Adjust calculations when traveling between cities and time zones. Why Choose MikvahCalendar.com? Rabbinically endorsed and trusted across communities. Developed by MIT graduates with a focus on halachic accuracy and user-friendly design. Used by hundreds of thousands of couples, chosson and kallahs, rabbis and rebbetzins, and chosson and kallah teachers worldwide. Supports both high-tech homes and homes that choose to limit internet access. Note: Internet connection is required to use the app. For those who prefer, a Mehadrin phone-based system is available with no internet required — receive reminders via phone call in your local time zone. MikvahCalendar.com is the original, most complete mikvah calendar solution for women and couples committed to taharat hamishpacha. Whether you need a comprehensive mikvah tracker, reminders, zmanim related to taharat hamishpacha or halachic clarity, this app helps bring confidence and calm to your home.

About

Perach

Features
Read full description

Perach works out your dates and reminds you: hefsek taharah, seven clean days, mikvah night — following your custom, at the solar times of wherever you are. YOUR DATA STAYS ON YOUR PHONE Your journal — dates, checks, observations — stays on your device, encrypted and protected by your passcode. We never receive it, so we cannot read it. No ads, no trackers, nothing sold. PERACH GIVES NO PSAK For a doubt, a colour, an unusual situation, the app never answers in a rav's place: it takes you to one. You can write to a rav whose identity has been verified by hand. Your messages are end-to-end encrypted, and you stay anonymous unless you choose to give your name. DISCREET, BECAUSE IT IS PRIVATE You can disguise the text of your reminders on the lock screen, and lock the app with Face ID. On Shabbat and festivals everything falls silent: whatever was due to ring during is announced before it comes in. ALSO INSIDE • Over 2,000 mikvaot worldwide, with map, hours and directions • A travel mode that recalculates your milestones in your destination's time zone • A calendar that shows where you stand at a glance • A week sheet you can print or send to your rav • 29 languages, including Hebrew and Yiddish FREE No subscription, no in-app purchases, no advertising. Perach is a calculation and reminder aid. The dates it shows are estimates based on the custom you chose; they are neither a halachic ruling nor medical advice. Any question of doubt belongs to your rav or a yoetzet halacha.

Screenshots

Mikvah Calendar4 screens
Perach4 screens

Verdict

The call

The clearest difference is update cadence: Perach at every 2 days against Mikvah Calendar's every 2 months. Mikvah Calendar's advantage is device support (3 vs 1) and iOS requirement (11.4 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mikvah Calendar ships an update every 2 months, Perach every 2 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Mikvah Calendar versus Perach: the parameters behind the verdict, then further details
ParameterMikvah CalendarPerach
PriceFreeFree
Rating4.9 (1.3K ratings) — better—
Positive reviews85.4% of reviews—
Number of ratings1.3K — better—
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.4 — better17.0
Further details — not scored
Size14 MB48 MB
Age rating4+9+
DeveloperMikvahCalendar.comMiguel Zacco

Bugs and requests

Mikvah Calendar

Reported bugs

6 issues
  • App and website not working
  • App does not open
  • Tends to glitch
  • Fatal error messages
  • Keeps user logged out
Show 1 more
  • Reminders stopped working

Requested features

5 requests
  • Add a place to check off bedikas
  • In App Purchases for subscriptions
  • More discreet app icon for screen sharing
  • Add dark mode option
  • Advanced analytics dashboard

Perach

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Mikvah Calendar

No in-app purchases

None

Perach

No in-app purchases

Questions

Is Mikvah Calendar free?
Mikvah Calendar is free to download, with no in-app purchases.
Is Perach free?
Perach is free to download, with no in-app purchases.
Do Mikvah Calendar or Perach have ads?
Neither Mikvah Calendar nor Perach shows ads.
Which is updated more often, Mikvah Calendar or Perach?
Mikvah Calendar ships an update every 2 months, and Perach every 2 days. Most recently, Mikvah Calendar was updated on November 6, 2026 and Perach on October 31, 2026.

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