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NFP by Chad Brassil
A Palm OS program for tracking fertility, known as the Sympto-thermal Method, Fertility Awareness Method, Natural Family Planning, or Ovulation Method.

NFP is a software program designed for Palm OS that allows a woman to track her fertility throughout a menstrual cycle using a set of simple daily measurements.  NFP can be used either to avoid or achieve pregnancy.  It can be an effective chemical-free method of contraception, or it can be an inexpensive method of conception.

NFP is freeware.  Click here to download the latest version (in English, Español, Deutsch, Français, and Italiano).

Please email me with questions, suggestions, or excessive praise (the only reward for writers of freeware).

NFP for Palm OS can be placed by your bed or easily travel.  It can instantly be turned on to record or check data, using the backlight in the dark.  The program will confirm your own interpretation of the data.  Perhaps the most useful feature is that NFP can remind you to record information with alarms.

If perfectly practiced to avoid pregnancy, NFP methods can have a success rate of 98.7 to 99.7% (see Pyper and Knight 2001).  However, the overall user success rate can be lower depending on the motivation of the couple.  NFP for Palm OS may increase the overall effectiveness by reminding you to record data, confirming your interpretation, and increasing the convenience of practicing fertility awareness.

"I discovered NFP and immediately fell in love with it."
--Susan from Phoenix on Handango
 
 
"The best one I've seen and used so far is NFP. . . This program is even endorsed by my gynecologist. . . an invaluable tool to track your cycles and learn about your body."
--tulipcowgirl on OrganizedHome

 

"I have to say this is the best program I have seen for women on the go.  The program doesn't take up the entire space of my PDA and it explains everything well.  It's easy to use and accurate.  I would recomend this to all women."
--Aleksandra Szewczyk

 

"NFP is free and highly recommended. . . I'm very impressed with how well it works. . . Personally I'd recommend NFP"
--GingerGirl on Ovusoft

Features:

  • Records daily indicators
    • basal body temperature (Celsius or Fahrenheit)
    • vaginal fluid sensation
    • vaginal fluid color
    • cervical position
  • Records additional daily information
    • time temperature was taken
    • extensive note feature
    • luteinizing hormone, or fertility stick, test results
    • sex: no/yes/protected
    • "other" checkbox available for personal use
  • Daily reminder alarms
    • morning alarm for temperature
    • evening alarm for fluid sensation, fluid color, and cervical position
    • "smart alarms" that do not sound if data has already been recorded
    • allows program to start and morning temperature to be entered with as few as 4 screen taps.
  • Summary information
    • average cycle length
    • average luteal length
    • shortest cycle length
  • Predicts fertile and infertile stages based on standard NFP rules
    • predicts fertile stages, and post-ovulatory infertile stages using up to four methods: temperature shifts, vagnial fluid information, cervical position changes, and luteinizing hormone test results.
    • thermal shift based on coverline method, averaging method, extended coverline method, or Couple to Couple League rules
    • fertility predictions also based on vaginal fluid
    • infertile stage at beginning of cycle predicted using Roetzer rule, allowing the user to set the number of days labeled as infertile
    • infertile stage at beginning of cycle predicted using dry-days rule
    • Preferences gives the user full control to use, not use, or modify all of the above features, putting the user in full control.
  • Month view, cycle view, or day view
    • All three views display fertility prediction information
    • Month view allows the user to view a calendar indicating how much data has been collected and on what days.
    • Cycle Chart view allows the user to view raw data for an entire cycle in order to make their own fertility decisions.  Cycle Chart displays raw temperatures, time adjusted temperatures, flow, fluid sensation, fluid color, and cervical position.
    • Day view displays day of current cycle
  • Predicts future period start dates
    • predicts menstruation start dates based on average cycle length and current start date, or average luteal length and current ovulation date
  • Export data to Memo Pad
    • can sync text data file with any computer
    • included MS Excel template allows you to print cycle charts