NFP is a program designed for Palm OS that allows a woman or a couple to track her fertility 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.

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
  • Alcohol consumption previous day
  • Extensive note feature
  • Lutenizing 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 as 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
  • Minimum 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 lutenizing hormone test results.
  • Thermal shift based on coverline method or averaging method
  • Vaginal fluid fertility predicted using Billings method
  • 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

• Added a French version
• Added a Italian version
• Added support during breastfeeding (postpartum).
• Added Couple to Couple League presets, including Rule C, Rule B, Rule R, and Rule A.
• Expanded temperature range to 95.0 and 99.5. Celsius precision has been increased to 0.05. Note: You cannot return to an older version of NFP once you have upgraded to this version. Open NFP after installing this upgrade so the program can complete translation of temperatures.
• Changed "Alcohol" label to "Ignore Temperature"; however the use of the checkbox remains the same.
• Optimization: Increased speed with which calculations are conducted after new data has been entered.
• Bug Fix: Corrected some problems with password request.
• Bug Fix: Corrected problems with Note that may have been causing crashes.
• Bug Fix: Corrected chart error when lowest temperatures were selected with time correction.

• Added a german version
• Added a spanish version
• Added support for the Marquette Model, as taught by St. Louis University and Marquette University, to record fluid information. (Thanks to St. Louis University for providing funding to add this feature)
• Reorganized preferences to create "Presets" which will allow the program to be customized for individual programs and models.
• Added support for the use of Clearplan, or Clearblue, fertility hormone test in place of the LH Test.
• Added a preference allowing the display of hormone test results in place of the cervix position on the Chart Display.
• Export feature can now export either semicolon separated data or tab separated data for increased compatibility with OpenOffice
• Added "recalculating" popup message during pause after adding new data.
• Bug Fix: "Disable alarms after peak" disabled the visual alarm, but not the audio alarm.
• Bug Fix: When a time adjustment of less than 2:00 is entered and alchohol is also checked, an open circle was incorrectly drawn for the next dot in Cycle Chart.
• Bug Fix: When the Note is modified in an empty record and then canceled, an error was generated.