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I am looking for a program that calculates the different significant dates for hilchos Niddah based on the information you give it.

My criteria are as follows:

  • Must be free
  • Must be PC compatible (i.e. for Windows; not a smartphone app)
  • Must have options to customize whether or not to take into account different opinions and stringencies
  • Must have letters of approbation from at least one recognized Rabbi (I realize this term is vague, but it will at least set a certain minimum standard)
  • Must not require programming knowledge in order to be able to use it and customize it

I am aware of several programs, but none of them meet all, or even most, of my criteria.

  • I coulda sworn we had this question already, or one very similar to it, but I can't find it now. – msh210 Dec 4 '14 at 6:03
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Try https://www.mymikvahcalendar.org which has approbations from 7 Rabbis, 1 institution and 3 Kallah teachers.

The FAQ also talks about the settings menu so it may have options to customize whether or not to take into account different opinions and stringencies.

Seems to be free and is web-based, so it'll work on any computer.

Caveat: That's all I know about this.

  • wife uses it even though we are not lubavitch. it is very good – user6641 Dec 4 '14 at 14:13
  • Thanks and +1 - my only hang-up is that all the approbations are from Chabad rabbis - is there some reason that they haven't gotten any other buy-in? – Y     e     z Dec 4 '14 at 18:56
  • @YeZ - my guess would be that they didn't bother. (It's almost disrespectful to ask another Rabbi for his opinion once "your own" Rabbis have approved. But as I already said, I know nothing about this, and found it with the help of Rabbi Google.) – Danny Schoemann Dec 7 '14 at 7:25
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Here's another that also appears to be free. It is not, at least as far as I can tell only Chabad. I only recognize Rabbi Jacobs. FYI, only the smartphone app charges as far as it appears.

https://www.mikvahcalendar.com

  • +1 but the list of names makes me nervous. Maybe just because I've been influenced by the big names that anyone who wants a haskama can get. Are "big" (i.e. name-recognition) gedolim hesitant to provide haskamas for such things? – jim Jan 17 '16 at 17:15
  • @jim I understand. Traditionally, meaning Rishonim and Acharonim, haskamot were given to testify about the character of the author. Sometimes about the content of a book. This came in a time when Jews lost the ability to trust the good in one another. That kind of doubt is often grounded in the 'politics' and not the Torah. It is a remnant of 'galut', something we all need to work to overcome. The book is around. If you're not sure, find it by a friend and see if it makes sense to you. I've looked through it. I've looked at the sources. It's one worth having on the shelf for a English reader. – Yaacov Deane Jan 18 '16 at 0:07

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